diff --git a/bin/wm_append_clusters_to_anatomical_tracts.py b/bin/wm_append_clusters_to_anatomical_tracts.py
index c4bae12b..b6b73834 100755
--- a/bin/wm_append_clusters_to_anatomical_tracts.py
+++ b/bin/wm_append_clusters_to_anatomical_tracts.py
@@ -7,6 +7,34 @@
 import glob
 
 import whitematteranalysis as wma
+import pandas as pd
+
+from whitematteranalysis.data.atlas.utils import (
+    ORGAtlasVersion,
+    get_local_atlas_bundle_fname,
+)
+from whitematteranalysis.anatomy.org_atlas_utils import (
+    ORGAtlasBundleFileHeading,
+    get_hemispheric_mono_bundles,
+    get_commissural_augmented_bundles,
+    add_org_atlas_prefix,
+    get_bundle_short_name,
+)
+
+
+def get_hemispheric_mono_bundle_names(_df):
+
+    hemis_mono_df = get_hemispheric_mono_bundles(_df)
+    hemis_names = hemis_mono_df[ORGAtlasBundleFileHeading.SHORT_NAME.value].values.tolist()
+    return add_org_atlas_prefix(hemis_names)
+
+
+def get_commissural_bundle_names(_df):
+
+    com_df = get_commissural_augmented_bundles(_df)
+    com_names = get_bundle_short_name(com_df, com_df[
+        ORGAtlasBundleFileHeading.ID.value].values)
+    return add_org_atlas_prefix(com_names)
 
 
 def _build_arg_parser():
@@ -23,6 +51,12 @@ def _build_arg_parser():
     parser.add_argument(
         'outputDirectory',
         help='The output directory should be a new empty directory. It will be created if needed.')
+    parser.add_argument(
+        '--version',
+        choices=ORGAtlasVersion._member_names_,
+        default=ORGAtlasVersion.V1_2.name,
+        help="Atlas version.",
+    )
 
     return parser
 
@@ -104,12 +138,11 @@ def output_appended_tract(cluster_vtp_list, outputfile):
 
         wma.io.write_polydata(pd_appended_cluster, outputfile)
 
-    hemispheric_tracts = ["T_AF", "T_CB", "T_CPC", "T_MdLF", "T_PLIC", "T_SLF-I", "T_SLF-II", "T_SLF-III", "T_EC", "T_EmC", "T_ICP", "T_ILF", "T_IOFF", "T_UF",
-                         "T_Intra-CBLM-I&P", "T_Intra-CBLM-PaT", "T_CR-F", "T_CR-P", "T_CST", "T_SF", "T_SO", "T_SP", "T_TF", "T_TO", "T_TP",
-                         "T_Sup-F", "T_Sup-FP", "T_Sup-O", "T_Sup-OT", "T_Sup-P", "T_Sup-PO", "T_Sup-PT", "T_Sup-T"]
-
-    commissural_tracts = ["T_CC1", "T_CC2", "T_CC3", "T_CC4", "T_CC5", "T_CC6", "T_CC7", "T_MCP"]
+    fname = get_local_atlas_bundle_fname(ORGAtlasVersion(args.version))
+    df = pd.read_csv(fname, sep=",")
 
+    hemispheric_tracts = get_hemispheric_mono_bundle_names(df)
+    commissural_tracts = get_commissural_bundle_names(df)
 
     print(f"<{os.path.basename(__file__)}> hemispheric tracts (left and right): ")
     tract_idx = 1
diff --git a/utilities/tests/test_wm_query_atlas_bundle_names.py b/utilities/tests/test_wm_query_atlas_bundle_names.py
new file mode 100644
index 00000000..811fedda
--- /dev/null
+++ b/utilities/tests/test_wm_query_atlas_bundle_names.py
@@ -0,0 +1,6 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+def test_help_option(script_runner):
+    ret = script_runner.run(["wm_query_atlas_bundles_names.py", "--help"])
+    assert ret.success
diff --git a/utilities/wm_query_atlas_bundles_names.py b/utilities/wm_query_atlas_bundles_names.py
new file mode 100644
index 00000000..7abd04ea
--- /dev/null
+++ b/utilities/wm_query_atlas_bundles_names.py
@@ -0,0 +1,67 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""Query the atlas bundle names.
+
+e.g. python wm_query_atlas_bundles.py \
+    /mnt/data/atlas/ORG-Atlas-1.4/ORG-800FC-100HCP/ \
+    /mnt/data/atlas/ORG-Atlas-1.4/bundle_names_default.txt \
+    DEFAULT
+
+ python wm_query_atlas_bundles.py \
+    /mnt/data/atlas/ORG-Atlas-1.4/ORG-800FC-100HCP-separated/AnatomicalTracts/ \
+    /mnt/data/atlas/ORG-Atlas-1.4/bundle_names_separated.txt \
+    SEPARATED
+"""
+
+import argparse
+from pathlib import Path
+
+from whitematteranalysis.anatomy.org_atlas_utils import (
+    AtlasAvailability,
+    query_bundle_names,
+)
+from whitematteranalysis.fileio.utils import save2txt
+
+
+def _build_arg_parser():
+
+    parser = argparse.ArgumentParser(
+        description=__doc__, formatter_class=argparse.RawTextHelpFormatter
+    )
+    parser.add_argument("in_path", type=Path, help="Input path.")
+    parser.add_argument(
+        "out_fname",
+        help="Output filename (*.txt).",
+        type=Path,
+    )
+    parser.add_argument(
+        "atlas_availability",
+        choices=AtlasAvailability._member_names_,
+        help="Atlas availability.",
+    )
+
+    return parser
+
+
+def _parse_args(parser):
+
+    args = parser.parse_args()
+
+    return args
+
+
+def main():
+
+    parser = _build_arg_parser()
+    args = _parse_args(parser)
+
+    bundle_names = query_bundle_names(
+        args.in_path,
+        AtlasAvailability.__getitem__(args.atlas_availability),
+    )
+    save2txt(args.out_fname, bundle_names)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/whitematteranalysis/anatomy/__init__.py b/whitematteranalysis/anatomy/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/whitematteranalysis/anatomy/org_atlas_utils.py b/whitematteranalysis/anatomy/org_atlas_utils.py
new file mode 100644
index 00000000..096638a4
--- /dev/null
+++ b/whitematteranalysis/anatomy/org_atlas_utils.py
@@ -0,0 +1,177 @@
+# -*- coding: utf-8 -*-
+
+import enum
+
+import pandas as pd
+
+from whitematteranalysis.fileio.utils import (
+    SlicerFileExtension,
+    VTKFileExtension,
+    find_filenames,
+)
+
+atlas_bundle_file_prefix = "T_"
+nonatlas_bundle_names = ["T_FalsePositive"]
+
+
+class Hemisphere(enum.Enum):
+    LEFT = "left"
+    RIGHT = "right"
+
+
+class AtlasAvailability(enum.Enum):
+    DEFAULT = "default"
+    SEPARATED = "separated"
+
+
+class ORGAtlasBundleType(enum.Enum):
+    ASS = "Association"
+    CER = "Cerebellar"
+    COM = "Commissural"
+    PRO = "Projection"
+    STR = "Striatal"
+    SUP = "Superficial"
+
+
+class ORGAtlasBundleFileHeading(enum.Enum):
+    ID = "id"
+    SHORT_NAME = "short_name"
+    LONG_NAME = "long_name"
+
+
+class ORGAtlasBundleRange(enum.Enum):
+    ASO = (101, 199)
+    CER = (201, 299)
+    COM = (301, 399)
+    PRO = (401, 499)
+    STR = (501, 599)
+    SUP = (601, 699)
+
+    @staticmethod
+    def get_range_low(name):
+        return ORGAtlasBundleRange(name).value[0]
+
+    @staticmethod
+    def get_range_high(name):
+        return ORGAtlasBundleRange(name).value[1]
+
+
+def get_bundles(df, bundle_id):
+    return df[df[ORGAtlasBundleFileHeading.ID.value].isin(bundle_id)]
+
+
+def get_bundle_feature(df, bundle_id, column):
+    return get_bundles(df, bundle_id)[column].values.tolist()
+
+
+def get_bundle_long_name(df, bundle_id):
+    return get_bundle_feature(df, bundle_id, ORGAtlasBundleFileHeading.LONG_NAME.value)
+
+
+def get_bundle_short_name(df, bundle_id):
+    return get_bundle_feature(df, bundle_id, ORGAtlasBundleFileHeading.SHORT_NAME.value)
+
+
+def get_bundle_type(df, bundle_type):
+    return df[
+        df[
+            ORGAtlasBundleFileHeading.ID.value].between(
+            ORGAtlasBundleRange.get_range_low(bundle_type),
+            ORGAtlasBundleRange.get_range_high(bundle_type)
+        )
+    ]
+
+
+def get_association_bundles(df):
+    return get_bundle_type(df, ORGAtlasBundleRange.ASO)
+
+
+def get_cerebellar_bundles(df):
+    return get_bundle_type(df, ORGAtlasBundleRange.CER)
+
+
+def get_commissural_bundles(df):
+    return get_bundle_type(df, ORGAtlasBundleRange.COM)
+
+
+def get_commissural_augmented_bundles(df):
+    com = get_commissural_bundles(df)
+    # Add the MCP
+    mcp = get_bundles(df, [209])
+
+    return pd.concat([com, mcp], ignore_index=True)
+
+
+def get_hemispheric_bundles(df):
+    aso = get_association_bundles(df)
+    cer = get_cerebellar_bundles(df)
+    # Remove the MCP
+    cer = cer.drop(cer[cer[ORGAtlasBundleFileHeading.ID.value] == 209].index)
+    stl = get_striatal_bundles(df)
+    pro = get_projection_bundles(df)
+    sup = get_superficial_bundles(df)
+
+    return pd.concat([aso, cer, stl, pro, sup], ignore_index=True)
+
+
+def get_hemispheric_mono_bundles(df):
+    hem_mono = get_hemispheric_bundles(df)
+
+    # Remove all right values
+    hem_mono = hem_mono.drop(hem_mono.loc[hem_mono[ORGAtlasBundleFileHeading.SHORT_NAME.value].str.contains(Hemisphere.RIGHT.value)].index)
+
+    # Drop the left substring
+    short_name_substr = "_" + Hemisphere.LEFT.value
+    column = ORGAtlasBundleFileHeading.SHORT_NAME.value
+    hem_mono[column] = hem_mono[column].str.replace(short_name_substr, "")
+    long_name_substr = " " + Hemisphere.LEFT.value
+    column = ORGAtlasBundleFileHeading.LONG_NAME.value
+    hem_mono[column] = hem_mono[column].str.replace(long_name_substr, "")
+
+    # Strip the ID as it makes no longer sense
+    hem_mono.drop(ORGAtlasBundleFileHeading.ID.value, axis=1, inplace=True)
+
+    return hem_mono
+
+
+def get_projection_bundles(df):
+    return get_bundle_type(df, ORGAtlasBundleRange.PRO)
+
+
+def get_striatal_bundles(df):
+    return get_bundle_type(df, ORGAtlasBundleRange.STR)
+
+
+def get_superficial_bundles(df):
+    return get_bundle_type(df, ORGAtlasBundleRange.SUP)
+
+
+def query_bundle_names_from_anatomical_tracts(path):
+    bundle_names = find_filenames(path, VTKFileExtension.VTP, stem=True)
+    return bundle_names
+
+
+def query_bundle_names_from_scene_files(path):
+    bundle_names = find_filenames(path, SlicerFileExtension.MRML, stem=True)
+
+    # Remove non-atlas filenames if present
+    [bundle_names.remove(elem) for elem in nonatlas_bundle_names]
+    bundle_names = [elem for elem in bundle_names if elem.startswith(atlas_bundle_file_prefix)]
+
+    return bundle_names
+
+
+def add_org_atlas_prefix(bundles):
+    return [atlas_bundle_file_prefix + elem for elem in bundles]
+
+
+def query_bundle_names(path, atlas_availability):
+
+    if atlas_availability == AtlasAvailability.DEFAULT:
+        return query_bundle_names_from_scene_files(path)
+    elif atlas_availability == AtlasAvailability.SEPARATED:
+        return query_bundle_names_from_anatomical_tracts(path)
+    else:
+        raise ValueError(
+            f"Unsupported value:\n"
+            f"Found: {atlas_availability}; Available: {AtlasAvailability.__members__}")
diff --git a/whitematteranalysis/anatomy/tests/__init__.py b/whitematteranalysis/anatomy/tests/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/whitematteranalysis/anatomy/tests/test_org_atlas_utils.py b/whitematteranalysis/anatomy/tests/test_org_atlas_utils.py
new file mode 100644
index 00000000..a1a7ffe2
--- /dev/null
+++ b/whitematteranalysis/anatomy/tests/test_org_atlas_utils.py
@@ -0,0 +1,160 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import pandas as pd
+
+from whitematteranalysis.anatomy.org_atlas_utils import (
+    ORGAtlasBundleFileHeading,
+    get_association_bundles,
+    get_bundle_long_name,
+    get_bundle_short_name,
+    get_cerebellar_bundles,
+    get_commissural_bundles,
+    get_commissural_augmented_bundles,
+    get_hemispheric_bundles,
+    get_hemispheric_mono_bundles,
+    get_striatal_bundles,
+    get_projection_bundles,
+    get_superficial_bundles,
+)
+from whitematteranalysis.data.atlas.utils import (
+    ORGAtlasVersion,
+    get_local_atlas_bundle_fname,
+)
+
+
+def _check_bundle_count(method_name, expected_bndl_count):
+
+    version = ORGAtlasVersion.__members__.values()
+
+    for ver, expected_count in zip(version, expected_bndl_count):
+        fname = get_local_atlas_bundle_fname(ver)
+        df = pd.read_csv(fname, sep=",")
+        cer = method_name(df)
+        obtained_count = len(cer)
+
+        assert obtained_count == expected_count
+
+
+def _check_bundle_name(method_name, version, bundle_id, expected_name):
+
+    fname = get_local_atlas_bundle_fname(version)
+    df = pd.read_csv(fname, sep=",")
+
+    obtained_name = method_name(df, bundle_id)
+
+    assert obtained_name == expected_name
+
+
+def test_get_association_bundles():
+
+    expected_bndl_count = [20, 20, 20, 20, 20, 20]
+    _check_bundle_count(get_association_bundles, expected_bndl_count)
+
+
+def test_get_bundle_long_name():
+
+    version = ORGAtlasVersion.V1_2
+
+    bundle_id = [201]
+    method_name = get_bundle_long_name
+    expected_name = ["cortico - ponto - cerebellar left"]
+    _check_bundle_name(method_name, version, bundle_id, expected_name)
+
+    fname = get_local_atlas_bundle_fname(version)
+    df = pd.read_csv(fname, sep=",")
+    stl = get_striatal_bundles(df)
+    bundle_id = stl[ORGAtlasBundleFileHeading.ID.value].values
+
+    expected_name = ["external capsule left", "external capsule right"]
+    _check_bundle_name(method_name, version, bundle_id, expected_name)
+
+
+def test_get_bundle_short_name():
+
+    version = ORGAtlasVersion.V1_2
+
+    bundle_id = [201]
+    method_name = get_bundle_short_name
+    expected_name = ["CPC_left"]
+    _check_bundle_name(method_name, version, bundle_id, expected_name)
+
+    fname = get_local_atlas_bundle_fname(version)
+    df = pd.read_csv(fname, sep=",")
+    stl = get_striatal_bundles(df)
+    bundle_id = stl[ORGAtlasBundleFileHeading.ID.value].values
+
+    expected_name = ["EC_left", "EC_right"]
+    _check_bundle_name(method_name, version, bundle_id, expected_name)
+
+
+def test_get_cerebellar_bundles():
+
+    expected_bndl_count = [9, 9, 9, 9, 9, 9, 9]
+    _check_bundle_count(get_cerebellar_bundles, expected_bndl_count)
+
+
+def test_get_commissural_bundles():
+
+    expected_bndl_count = [7, 7, 7, 7, 7, 7]
+    _check_bundle_count(get_commissural_bundles, expected_bndl_count)
+
+
+def test_get_commissural_augmented_bundles():
+
+    expected_count = 8
+
+    version = ORGAtlasVersion.V1_2
+    fname = get_local_atlas_bundle_fname(version)
+    df = pd.read_csv(fname, sep=",")
+
+    com_aug = get_commissural_augmented_bundles(df)
+    obtained_count = len(com_aug)
+
+    assert obtained_count == expected_count
+
+
+def test_get_hemispheric_bundles():
+
+    expected_count = 66
+
+    version = ORGAtlasVersion.V1_2
+    fname = get_local_atlas_bundle_fname(version)
+    df = pd.read_csv(fname, sep=",")
+
+    com_aug = get_hemispheric_bundles(df)
+    obtained_count = len(com_aug)
+
+    assert obtained_count == expected_count
+
+
+def test_get_hemispheric_mono_bundles():
+
+    expected_count = 33
+
+    version = ORGAtlasVersion.V1_2
+    fname = get_local_atlas_bundle_fname(version)
+    df = pd.read_csv(fname, sep=",")
+
+    com_aug = get_hemispheric_mono_bundles(df)
+    obtained_count = len(com_aug)
+
+    assert obtained_count == expected_count
+
+
+def test_get_striatal_bundles():
+
+    expected_bndl_count = [2, 2, 2, 2, 2, 2]
+    _check_bundle_count(get_striatal_bundles, expected_bndl_count)
+
+
+def test_get_projection_bundles():
+
+    expected_bndl_count = [20, 20, 20, 22, 20, 22]
+    _check_bundle_count(get_projection_bundles, expected_bndl_count)
+
+
+def test_get_superficial_bundles():
+
+    expected_bndl_count = [16, 16, 16, 16, 16, 16]
+    _check_bundle_count(get_superficial_bundles, expected_bndl_count)
diff --git a/whitematteranalysis/data/__init__.py b/whitematteranalysis/data/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/whitematteranalysis/data/atlas/__init__.py b/whitematteranalysis/data/atlas/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/whitematteranalysis/data/atlas/org_atlas_bundles_v1_1.csv b/whitematteranalysis/data/atlas/org_atlas_bundles_v1_1.csv
new file mode 100644
index 00000000..b2680767
--- /dev/null
+++ b/whitematteranalysis/data/atlas/org_atlas_bundles_v1_1.csv
@@ -0,0 +1,81 @@
+id,short_name,long_name
+
+101,AF_left,arcuate fasciculus left
+102,AF_right,arcuate fasciculus right
+103,CB_left,cingulum bundle left
+104,CB_right,cingulum bundle right
+105,EmC_left,extreme capsule left
+106,EmC_right,extreme capsule right
+107,ILF_left,inferior longitudinal fasciculus left
+108,ILF_right,inferior longitudinal fasciculus left
+109,IOFF_left,inferior occipito-frontal fasciculus left
+110,IOFF_right,inferior occipito-frontal fasciculus left
+111,MdLF_left,middle longitudinal fasciculus left
+112,MdLF_right,middle longitudinal fasciculus right
+113,SLF-I_left,superior longitudinal fasciculus I left
+114,SLF-I_right,superior longitudinal fasciculus I right
+115,SLF-II_left,superior longitudinal fasciculus II left
+116,SLF-II_right,superior longitudinal fasciculus II right
+117,SLF-III_left,superior longitudinal fasciculus III left
+118,SLF-III_right,superior longitudinal fasciculus III right
+119,UF_left,uncinate fasciculus left
+120,UF_right,uncinate fasciculus right
+
+201,CPC_left,cortico - ponto - cerebellar left
+202,CPC_right,cortico - ponto - cerebellar right
+203,ICP_left,inferior cerebellar peduncle left
+204,ICP_right,inferior cerebellar peduncle right
+205,Intra-CBLM-I&P_left,intracerebellar input and Purkinje tract left
+206,Intra-CBLM-I&P_right,intracerebellar input and Purkinje tract right
+207,Intra-CBLM-PaT_left,intracerebellar parallel tract left
+208,Intra-CBLM-PaT_right,intracerebellar parallel tract right
+209,MCP,middle cerebellar peduncle
+
+301,CC1,corpus callosum 1
+302,CC2,corpus callosum 2
+303,CC3,corpus callosum 3
+304,CC4,corpus callosum 4
+305,CC5,corpus callosum 5
+306,CC6,corpus callosum 6
+307,CC7,corpus callosum 7
+
+401,CR-F_left,corona-radiata-frontal left
+402,CR-F_right,corona-radiata-frontal right
+403,CR-P_left,corona-radiata-parietal left
+404,CR-P_right,corona-radiata-parietal right
+405,CST_left,corticospinal tract left
+406,CST_right,corticospinal tract right
+407,PLIC_left,posterior limb of internal capsule left
+408,PLIC_right,posterior limb of internal capsule right
+409,SF_left,striato-frontal left
+410,SF_right,striato-frontal right
+411,SO_left,striato-occipital left
+412,SO_right,striato-occipital right
+413,SP_left,striato-parietal left
+414,SP_right,striato-parietal right
+415,TF_left,thalamo-frontal left
+416,TF_right,thalamo-frontal right
+417,TO_left,thalamo-occipital left
+418,TO_right,thalamo-occipital right
+419,TP_left,thalamo-parietal left
+420,TP_right,thalamo-parietal right
+
+501,EC_left,external capsule left
+502,EC_right,external capsule right
+
+601,Sup-F_left,superficial-frontal left
+602,Sup-F_right,superficial-frontal right
+603,Sup-FP_left,superficial-frontal-parietal left
+604,Sup-FP_right,superficial-frontal-parietal right
+605,Sup-O_left,superficial-occipital left
+606,Sup-O_right,superficial-occipital right
+607,Sup-OT_left,superficial-occipital-temporal left
+608,Sup-OT_right,superficial-occipital-temporal right
+609,Sup-P_left,superficial-parietal left
+610,Sup-P_right,superficial-parietal right
+611,Sup-PO_left,superficial-parietal-occipital left
+612,Sup-PO_right,superficial-parietal-occipital right
+613,Sup-PT_left,superficial-parietal-temporal left
+614,Sup-PT_right,superficial-parietal-temporal right
+615,Sup-T_left,superficial-temporal left
+616,Sup-T_right,superficial-temporal right
diff --git a/whitematteranalysis/data/atlas/org_atlas_bundles_v1_1_1.csv b/whitematteranalysis/data/atlas/org_atlas_bundles_v1_1_1.csv
new file mode 100644
index 00000000..b2680767
--- /dev/null
+++ b/whitematteranalysis/data/atlas/org_atlas_bundles_v1_1_1.csv
@@ -0,0 +1,81 @@
+id,short_name,long_name
+
+101,AF_left,arcuate fasciculus left
+102,AF_right,arcuate fasciculus right
+103,CB_left,cingulum bundle left
+104,CB_right,cingulum bundle right
+105,EmC_left,extreme capsule left
+106,EmC_right,extreme capsule right
+107,ILF_left,inferior longitudinal fasciculus left
+108,ILF_right,inferior longitudinal fasciculus left
+109,IOFF_left,inferior occipito-frontal fasciculus left
+110,IOFF_right,inferior occipito-frontal fasciculus left
+111,MdLF_left,middle longitudinal fasciculus left
+112,MdLF_right,middle longitudinal fasciculus right
+113,SLF-I_left,superior longitudinal fasciculus I left
+114,SLF-I_right,superior longitudinal fasciculus I right
+115,SLF-II_left,superior longitudinal fasciculus II left
+116,SLF-II_right,superior longitudinal fasciculus II right
+117,SLF-III_left,superior longitudinal fasciculus III left
+118,SLF-III_right,superior longitudinal fasciculus III right
+119,UF_left,uncinate fasciculus left
+120,UF_right,uncinate fasciculus right
+
+201,CPC_left,cortico - ponto - cerebellar left
+202,CPC_right,cortico - ponto - cerebellar right
+203,ICP_left,inferior cerebellar peduncle left
+204,ICP_right,inferior cerebellar peduncle right
+205,Intra-CBLM-I&P_left,intracerebellar input and Purkinje tract left
+206,Intra-CBLM-I&P_right,intracerebellar input and Purkinje tract right
+207,Intra-CBLM-PaT_left,intracerebellar parallel tract left
+208,Intra-CBLM-PaT_right,intracerebellar parallel tract right
+209,MCP,middle cerebellar peduncle
+
+301,CC1,corpus callosum 1
+302,CC2,corpus callosum 2
+303,CC3,corpus callosum 3
+304,CC4,corpus callosum 4
+305,CC5,corpus callosum 5
+306,CC6,corpus callosum 6
+307,CC7,corpus callosum 7
+
+401,CR-F_left,corona-radiata-frontal left
+402,CR-F_right,corona-radiata-frontal right
+403,CR-P_left,corona-radiata-parietal left
+404,CR-P_right,corona-radiata-parietal right
+405,CST_left,corticospinal tract left
+406,CST_right,corticospinal tract right
+407,PLIC_left,posterior limb of internal capsule left
+408,PLIC_right,posterior limb of internal capsule right
+409,SF_left,striato-frontal left
+410,SF_right,striato-frontal right
+411,SO_left,striato-occipital left
+412,SO_right,striato-occipital right
+413,SP_left,striato-parietal left
+414,SP_right,striato-parietal right
+415,TF_left,thalamo-frontal left
+416,TF_right,thalamo-frontal right
+417,TO_left,thalamo-occipital left
+418,TO_right,thalamo-occipital right
+419,TP_left,thalamo-parietal left
+420,TP_right,thalamo-parietal right
+
+501,EC_left,external capsule left
+502,EC_right,external capsule right
+
+601,Sup-F_left,superficial-frontal left
+602,Sup-F_right,superficial-frontal right
+603,Sup-FP_left,superficial-frontal-parietal left
+604,Sup-FP_right,superficial-frontal-parietal right
+605,Sup-O_left,superficial-occipital left
+606,Sup-O_right,superficial-occipital right
+607,Sup-OT_left,superficial-occipital-temporal left
+608,Sup-OT_right,superficial-occipital-temporal right
+609,Sup-P_left,superficial-parietal left
+610,Sup-P_right,superficial-parietal right
+611,Sup-PO_left,superficial-parietal-occipital left
+612,Sup-PO_right,superficial-parietal-occipital right
+613,Sup-PT_left,superficial-parietal-temporal left
+614,Sup-PT_right,superficial-parietal-temporal right
+615,Sup-T_left,superficial-temporal left
+616,Sup-T_right,superficial-temporal right
diff --git a/whitematteranalysis/data/atlas/org_atlas_bundles_v1_2.csv b/whitematteranalysis/data/atlas/org_atlas_bundles_v1_2.csv
new file mode 100644
index 00000000..b2680767
--- /dev/null
+++ b/whitematteranalysis/data/atlas/org_atlas_bundles_v1_2.csv
@@ -0,0 +1,81 @@
+id,short_name,long_name
+
+101,AF_left,arcuate fasciculus left
+102,AF_right,arcuate fasciculus right
+103,CB_left,cingulum bundle left
+104,CB_right,cingulum bundle right
+105,EmC_left,extreme capsule left
+106,EmC_right,extreme capsule right
+107,ILF_left,inferior longitudinal fasciculus left
+108,ILF_right,inferior longitudinal fasciculus left
+109,IOFF_left,inferior occipito-frontal fasciculus left
+110,IOFF_right,inferior occipito-frontal fasciculus left
+111,MdLF_left,middle longitudinal fasciculus left
+112,MdLF_right,middle longitudinal fasciculus right
+113,SLF-I_left,superior longitudinal fasciculus I left
+114,SLF-I_right,superior longitudinal fasciculus I right
+115,SLF-II_left,superior longitudinal fasciculus II left
+116,SLF-II_right,superior longitudinal fasciculus II right
+117,SLF-III_left,superior longitudinal fasciculus III left
+118,SLF-III_right,superior longitudinal fasciculus III right
+119,UF_left,uncinate fasciculus left
+120,UF_right,uncinate fasciculus right
+
+201,CPC_left,cortico - ponto - cerebellar left
+202,CPC_right,cortico - ponto - cerebellar right
+203,ICP_left,inferior cerebellar peduncle left
+204,ICP_right,inferior cerebellar peduncle right
+205,Intra-CBLM-I&P_left,intracerebellar input and Purkinje tract left
+206,Intra-CBLM-I&P_right,intracerebellar input and Purkinje tract right
+207,Intra-CBLM-PaT_left,intracerebellar parallel tract left
+208,Intra-CBLM-PaT_right,intracerebellar parallel tract right
+209,MCP,middle cerebellar peduncle
+
+301,CC1,corpus callosum 1
+302,CC2,corpus callosum 2
+303,CC3,corpus callosum 3
+304,CC4,corpus callosum 4
+305,CC5,corpus callosum 5
+306,CC6,corpus callosum 6
+307,CC7,corpus callosum 7
+
+401,CR-F_left,corona-radiata-frontal left
+402,CR-F_right,corona-radiata-frontal right
+403,CR-P_left,corona-radiata-parietal left
+404,CR-P_right,corona-radiata-parietal right
+405,CST_left,corticospinal tract left
+406,CST_right,corticospinal tract right
+407,PLIC_left,posterior limb of internal capsule left
+408,PLIC_right,posterior limb of internal capsule right
+409,SF_left,striato-frontal left
+410,SF_right,striato-frontal right
+411,SO_left,striato-occipital left
+412,SO_right,striato-occipital right
+413,SP_left,striato-parietal left
+414,SP_right,striato-parietal right
+415,TF_left,thalamo-frontal left
+416,TF_right,thalamo-frontal right
+417,TO_left,thalamo-occipital left
+418,TO_right,thalamo-occipital right
+419,TP_left,thalamo-parietal left
+420,TP_right,thalamo-parietal right
+
+501,EC_left,external capsule left
+502,EC_right,external capsule right
+
+601,Sup-F_left,superficial-frontal left
+602,Sup-F_right,superficial-frontal right
+603,Sup-FP_left,superficial-frontal-parietal left
+604,Sup-FP_right,superficial-frontal-parietal right
+605,Sup-O_left,superficial-occipital left
+606,Sup-O_right,superficial-occipital right
+607,Sup-OT_left,superficial-occipital-temporal left
+608,Sup-OT_right,superficial-occipital-temporal right
+609,Sup-P_left,superficial-parietal left
+610,Sup-P_right,superficial-parietal right
+611,Sup-PO_left,superficial-parietal-occipital left
+612,Sup-PO_right,superficial-parietal-occipital right
+613,Sup-PT_left,superficial-parietal-temporal left
+614,Sup-PT_right,superficial-parietal-temporal right
+615,Sup-T_left,superficial-temporal left
+616,Sup-T_right,superficial-temporal right
diff --git a/whitematteranalysis/data/atlas/org_atlas_bundles_v1_3a.csv b/whitematteranalysis/data/atlas/org_atlas_bundles_v1_3a.csv
new file mode 100644
index 00000000..d3d2ad72
--- /dev/null
+++ b/whitematteranalysis/data/atlas/org_atlas_bundles_v1_3a.csv
@@ -0,0 +1,83 @@
+id,short_name,long_name
+
+101,AF_left,arcuate fasciculus left
+102,AF_right,arcuate fasciculus right
+103,CB_left,cingulum bundle left
+104,CB_right,cingulum bundle right
+105,EmC_left,extreme capsule left
+106,EmC_right,extreme capsule right
+107,ILF_left,inferior longitudinal fasciculus left
+108,ILF_right,inferior longitudinal fasciculus left
+109,IOFF_left,inferior occipito-frontal fasciculus left
+110,IOFF_right,inferior occipito-frontal fasciculus left
+111,MdLF_left,middle longitudinal fasciculus left
+112,MdLF_right,middle longitudinal fasciculus right
+113,SLF-I_left,superior longitudinal fasciculus I left
+114,SLF-I_right,superior longitudinal fasciculus I right
+115,SLF-II_left,superior longitudinal fasciculus II left
+116,SLF-II_right,superior longitudinal fasciculus II right
+117,SLF-III_left,superior longitudinal fasciculus III left
+118,SLF-III_right,superior longitudinal fasciculus III right
+119,UF_left,uncinate fasciculus left
+120,UF_right,uncinate fasciculus right
+
+201,CPC_left,cortico - ponto - cerebellar left
+202,CPC_right,cortico - ponto - cerebellar right
+203,ICP_left,inferior cerebellar peduncle left
+204,ICP_right,inferior cerebellar peduncle right
+205,Intra-CBLM-I&P_left,intracerebellar input and Purkinje tract left
+206,Intra-CBLM-I&P_right,intracerebellar input and Purkinje tract right
+207,Intra-CBLM-PaT_left,intracerebellar parallel tract left
+208,Intra-CBLM-PaT_right,intracerebellar parallel tract right
+209,MCP,middle cerebellar peduncle
+
+301,CC1,corpus callosum 1
+302,CC2,corpus callosum 2
+303,CC3,corpus callosum 3
+304,CC4,corpus callosum 4
+305,CC5,corpus callosum 5
+306,CC6,corpus callosum 6
+307,CC7,corpus callosum 7
+
+401,CR-F_left,corona-radiata-frontal left
+402,CR-F_right,corona-radiata-frontal right
+403,CR-P_left,corona-radiata-parietal left
+404,CR-P_right,corona-radiata-parietal right
+405,CST_left,corticospinal tract left
+406,CST_right,corticospinal tract right
+407,PLIC_left,posterior limb of internal capsule left
+408,PLIC_right,posterior limb of internal capsule right
+409,SF_left,striato-frontal left
+410,SF_right,striato-frontal right
+411,SO_left,striato-occipital left
+412,SO_right,striato-occipital right
+413,SP_left,striato-parietal left
+414,SP_right,striato-parietal right
+415,TF_left,thalamo-frontal left
+416,TF_right,thalamo-frontal right
+417,TO_left,thalamo-occipital left
+418,TO_right,thalamo-occipital right
+419,TP_left,thalamo-parietal left
+420,TP_right,thalamo-parietal right
+421,TT_left,thalamo-temporal left
+422,TT_right,thalamo-temporal right
+
+501,EC_left,external capsule left
+502,EC_right,external capsule right
+
+601,Sup-F_left,superficial-frontal left
+602,Sup-F_right,superficial-frontal right
+603,Sup-FP_left,superficial-frontal-parietal left
+604,Sup-FP_right,superficial-frontal-parietal right
+605,Sup-O_left,superficial-occipital left
+606,Sup-O_right,superficial-occipital right
+607,Sup-OT_left,superficial-occipital-temporal left
+608,Sup-OT_right,superficial-occipital-temporal right
+609,Sup-P_left,superficial-parietal left
+610,Sup-P_right,superficial-parietal right
+611,Sup-PO_left,superficial-parietal-occipital left
+612,Sup-PO_right,superficial-parietal-occipital right
+613,Sup-PT_left,superficial-parietal-temporal left
+614,Sup-PT_right,superficial-parietal-temporal right
+615,Sup-T_left,superficial-temporal left
+616,Sup-T_right,superficial-temporal right
diff --git a/whitematteranalysis/data/atlas/org_atlas_bundles_v1_3b.csv b/whitematteranalysis/data/atlas/org_atlas_bundles_v1_3b.csv
new file mode 100644
index 00000000..b2680767
--- /dev/null
+++ b/whitematteranalysis/data/atlas/org_atlas_bundles_v1_3b.csv
@@ -0,0 +1,81 @@
+id,short_name,long_name
+
+101,AF_left,arcuate fasciculus left
+102,AF_right,arcuate fasciculus right
+103,CB_left,cingulum bundle left
+104,CB_right,cingulum bundle right
+105,EmC_left,extreme capsule left
+106,EmC_right,extreme capsule right
+107,ILF_left,inferior longitudinal fasciculus left
+108,ILF_right,inferior longitudinal fasciculus left
+109,IOFF_left,inferior occipito-frontal fasciculus left
+110,IOFF_right,inferior occipito-frontal fasciculus left
+111,MdLF_left,middle longitudinal fasciculus left
+112,MdLF_right,middle longitudinal fasciculus right
+113,SLF-I_left,superior longitudinal fasciculus I left
+114,SLF-I_right,superior longitudinal fasciculus I right
+115,SLF-II_left,superior longitudinal fasciculus II left
+116,SLF-II_right,superior longitudinal fasciculus II right
+117,SLF-III_left,superior longitudinal fasciculus III left
+118,SLF-III_right,superior longitudinal fasciculus III right
+119,UF_left,uncinate fasciculus left
+120,UF_right,uncinate fasciculus right
+
+201,CPC_left,cortico - ponto - cerebellar left
+202,CPC_right,cortico - ponto - cerebellar right
+203,ICP_left,inferior cerebellar peduncle left
+204,ICP_right,inferior cerebellar peduncle right
+205,Intra-CBLM-I&P_left,intracerebellar input and Purkinje tract left
+206,Intra-CBLM-I&P_right,intracerebellar input and Purkinje tract right
+207,Intra-CBLM-PaT_left,intracerebellar parallel tract left
+208,Intra-CBLM-PaT_right,intracerebellar parallel tract right
+209,MCP,middle cerebellar peduncle
+
+301,CC1,corpus callosum 1
+302,CC2,corpus callosum 2
+303,CC3,corpus callosum 3
+304,CC4,corpus callosum 4
+305,CC5,corpus callosum 5
+306,CC6,corpus callosum 6
+307,CC7,corpus callosum 7
+
+401,CR-F_left,corona-radiata-frontal left
+402,CR-F_right,corona-radiata-frontal right
+403,CR-P_left,corona-radiata-parietal left
+404,CR-P_right,corona-radiata-parietal right
+405,CST_left,corticospinal tract left
+406,CST_right,corticospinal tract right
+407,PLIC_left,posterior limb of internal capsule left
+408,PLIC_right,posterior limb of internal capsule right
+409,SF_left,striato-frontal left
+410,SF_right,striato-frontal right
+411,SO_left,striato-occipital left
+412,SO_right,striato-occipital right
+413,SP_left,striato-parietal left
+414,SP_right,striato-parietal right
+415,TF_left,thalamo-frontal left
+416,TF_right,thalamo-frontal right
+417,TO_left,thalamo-occipital left
+418,TO_right,thalamo-occipital right
+419,TP_left,thalamo-parietal left
+420,TP_right,thalamo-parietal right
+
+501,EC_left,external capsule left
+502,EC_right,external capsule right
+
+601,Sup-F_left,superficial-frontal left
+602,Sup-F_right,superficial-frontal right
+603,Sup-FP_left,superficial-frontal-parietal left
+604,Sup-FP_right,superficial-frontal-parietal right
+605,Sup-O_left,superficial-occipital left
+606,Sup-O_right,superficial-occipital right
+607,Sup-OT_left,superficial-occipital-temporal left
+608,Sup-OT_right,superficial-occipital-temporal right
+609,Sup-P_left,superficial-parietal left
+610,Sup-P_right,superficial-parietal right
+611,Sup-PO_left,superficial-parietal-occipital left
+612,Sup-PO_right,superficial-parietal-occipital right
+613,Sup-PT_left,superficial-parietal-temporal left
+614,Sup-PT_right,superficial-parietal-temporal right
+615,Sup-T_left,superficial-temporal left
+616,Sup-T_right,superficial-temporal right
diff --git a/whitematteranalysis/data/atlas/org_atlas_bundles_v1_4.csv b/whitematteranalysis/data/atlas/org_atlas_bundles_v1_4.csv
new file mode 100644
index 00000000..d3d2ad72
--- /dev/null
+++ b/whitematteranalysis/data/atlas/org_atlas_bundles_v1_4.csv
@@ -0,0 +1,83 @@
+id,short_name,long_name
+
+101,AF_left,arcuate fasciculus left
+102,AF_right,arcuate fasciculus right
+103,CB_left,cingulum bundle left
+104,CB_right,cingulum bundle right
+105,EmC_left,extreme capsule left
+106,EmC_right,extreme capsule right
+107,ILF_left,inferior longitudinal fasciculus left
+108,ILF_right,inferior longitudinal fasciculus left
+109,IOFF_left,inferior occipito-frontal fasciculus left
+110,IOFF_right,inferior occipito-frontal fasciculus left
+111,MdLF_left,middle longitudinal fasciculus left
+112,MdLF_right,middle longitudinal fasciculus right
+113,SLF-I_left,superior longitudinal fasciculus I left
+114,SLF-I_right,superior longitudinal fasciculus I right
+115,SLF-II_left,superior longitudinal fasciculus II left
+116,SLF-II_right,superior longitudinal fasciculus II right
+117,SLF-III_left,superior longitudinal fasciculus III left
+118,SLF-III_right,superior longitudinal fasciculus III right
+119,UF_left,uncinate fasciculus left
+120,UF_right,uncinate fasciculus right
+
+201,CPC_left,cortico - ponto - cerebellar left
+202,CPC_right,cortico - ponto - cerebellar right
+203,ICP_left,inferior cerebellar peduncle left
+204,ICP_right,inferior cerebellar peduncle right
+205,Intra-CBLM-I&P_left,intracerebellar input and Purkinje tract left
+206,Intra-CBLM-I&P_right,intracerebellar input and Purkinje tract right
+207,Intra-CBLM-PaT_left,intracerebellar parallel tract left
+208,Intra-CBLM-PaT_right,intracerebellar parallel tract right
+209,MCP,middle cerebellar peduncle
+
+301,CC1,corpus callosum 1
+302,CC2,corpus callosum 2
+303,CC3,corpus callosum 3
+304,CC4,corpus callosum 4
+305,CC5,corpus callosum 5
+306,CC6,corpus callosum 6
+307,CC7,corpus callosum 7
+
+401,CR-F_left,corona-radiata-frontal left
+402,CR-F_right,corona-radiata-frontal right
+403,CR-P_left,corona-radiata-parietal left
+404,CR-P_right,corona-radiata-parietal right
+405,CST_left,corticospinal tract left
+406,CST_right,corticospinal tract right
+407,PLIC_left,posterior limb of internal capsule left
+408,PLIC_right,posterior limb of internal capsule right
+409,SF_left,striato-frontal left
+410,SF_right,striato-frontal right
+411,SO_left,striato-occipital left
+412,SO_right,striato-occipital right
+413,SP_left,striato-parietal left
+414,SP_right,striato-parietal right
+415,TF_left,thalamo-frontal left
+416,TF_right,thalamo-frontal right
+417,TO_left,thalamo-occipital left
+418,TO_right,thalamo-occipital right
+419,TP_left,thalamo-parietal left
+420,TP_right,thalamo-parietal right
+421,TT_left,thalamo-temporal left
+422,TT_right,thalamo-temporal right
+
+501,EC_left,external capsule left
+502,EC_right,external capsule right
+
+601,Sup-F_left,superficial-frontal left
+602,Sup-F_right,superficial-frontal right
+603,Sup-FP_left,superficial-frontal-parietal left
+604,Sup-FP_right,superficial-frontal-parietal right
+605,Sup-O_left,superficial-occipital left
+606,Sup-O_right,superficial-occipital right
+607,Sup-OT_left,superficial-occipital-temporal left
+608,Sup-OT_right,superficial-occipital-temporal right
+609,Sup-P_left,superficial-parietal left
+610,Sup-P_right,superficial-parietal right
+611,Sup-PO_left,superficial-parietal-occipital left
+612,Sup-PO_right,superficial-parietal-occipital right
+613,Sup-PT_left,superficial-parietal-temporal left
+614,Sup-PT_right,superficial-parietal-temporal right
+615,Sup-T_left,superficial-temporal left
+616,Sup-T_right,superficial-temporal right
diff --git a/whitematteranalysis/data/atlas/org_atlas_version.json b/whitematteranalysis/data/atlas/org_atlas_version.json
new file mode 100644
index 00000000..04179cfe
--- /dev/null
+++ b/whitematteranalysis/data/atlas/org_atlas_version.json
@@ -0,0 +1,8 @@
+{
+  "V1_1": "org_atlas_bundles_v1_1.csv",
+  "V1_1_1": "org_atlas_bundles_v1_1_1.csv",
+  "V1_2": "org_atlas_bundles_v1_2.csv",
+  "V1_3_A": "org_atlas_bundles_v1_3a.csv",
+  "V1_3_B": "org_atlas_bundles_v1_3b.csv",
+  "V1_4": "org_atlas_bundles_v1_4.csv"
+}
diff --git a/whitematteranalysis/data/atlas/tests/__init__.py b/whitematteranalysis/data/atlas/tests/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/whitematteranalysis/data/atlas/tests/test_utils.py b/whitematteranalysis/data/atlas/tests/test_utils.py
new file mode 100644
index 00000000..3d217f48
--- /dev/null
+++ b/whitematteranalysis/data/atlas/tests/test_utils.py
@@ -0,0 +1,17 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import os
+
+from whitematteranalysis.data.atlas.utils import (
+    ORGAtlasVersion,
+    get_local_atlas_bundle_fname,
+)
+
+
+def test_get_local_atlas_bundle_fname():
+
+    version = ORGAtlasVersion.__members__.values()
+    assert [
+        os.path.exists(get_local_atlas_bundle_fname(ver)) for ver in version
+    ]
diff --git a/whitematteranalysis/data/atlas/utils.py b/whitematteranalysis/data/atlas/utils.py
new file mode 100644
index 00000000..086c5992
--- /dev/null
+++ b/whitematteranalysis/data/atlas/utils.py
@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+
+import enum
+import json
+import pathlib
+
+import importlib_resources
+
+
+class ORGAtlasVersion(enum.Enum):
+    V1_1 = "V1_1"
+    V1_1_1 = "V1_1_1"
+    V1_2 = "V1_2"
+    V1_3_A = "V1_3_A"
+    V1_3_B = "V1_3_B"
+    V1_4 = "V1_4"
+
+
+def get_local_atlas_bundle_fname(atlas):
+
+    path = importlib_resources.files(__name__).joinpath("org_atlas_version.json")
+
+    with path.open() as f:
+        org_atlas_version = json.load(f)
+
+    return pathlib.Path(str(path)).parent.joinpath(org_atlas_version[atlas.value])
diff --git a/whitematteranalysis/fileio/__init__.py b/whitematteranalysis/fileio/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/whitematteranalysis/fileio/utils.py b/whitematteranalysis/fileio/utils.py
new file mode 100644
index 00000000..2b6e1c7f
--- /dev/null
+++ b/whitematteranalysis/fileio/utils.py
@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+
+import enum
+import pathlib
+
+fname_sep = "."
+
+
+class SlicerFileExtension(enum.Enum):
+    MRML = "mrml"
+
+
+class VTKFileExtension(enum.Enum):
+    VTP = "vtp"
+
+
+def build_suffix(extension):
+
+    return fname_sep + extension.value
+
+
+def find_filenames(path, extension, stem=False):
+    filenames = sorted(list(pathlib.Path(path).glob("*" + build_suffix(extension))))
+    if stem:
+        return [elem.stem for elem in filenames]
+    else:
+        return filenames
+
+
+def save2txt(fname, sequence):
+
+    with open(fname, "w") as f:
+        f.write("\n".join(sequence))