diff --git a/DESCRIPTION b/DESCRIPTION
index 641591f0..650429aa 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: dataRetrieval
 Type: Package
 Title: Retrieval Functions for USGS and EPA Hydrology and Water Quality Data
-Version: 2.7.15.1
+Version: 2.7.16.1
 Authors@R: c(
     person("Laura", "DeCicco", role = c("aut","cre"),
             email = "ldecicco@usgs.gov",
diff --git a/R/sysdata.rda b/R/sysdata.rda
index 61afb0a9..44c350bb 100644
Binary files a/R/sysdata.rda and b/R/sysdata.rda differ
diff --git a/inst/CITATION b/inst/CITATION
index 46413f34..4f5831a6 100644
--- a/inst/CITATION
+++ b/inst/CITATION
@@ -8,12 +8,21 @@ bibentry(bibtype = "Manual",
     person("Robert", "Hirsch", role = c("aut"),
             comment=c(ORCID="0000-0002-4534-075X")),
     person("David","Lorenz", role=c("aut")),
+    person("Jordan", "Read", role = c("ctb")),
+    person("Jordan", "Walker", role = c("ctb")),
+    person("Lindsay","Platt", role=c("ctb")),
     person("David","Watkins", role=c("aut"),
             email = "wwatkins@usgs.gov",
             comment=c(ORCID="0000-0002-7544-0700")),
+    person("David", "Blodgett", role="aut",
+            comment=c(ORCID="0000-0001-9489-1710"),
+            email = "dblodgett@usgs.gov"),
     person("Mike", "Johnson", role=c("aut"),
             email = "mikecp11@gmail.com",
-            comment=c(ORCID="0000-0002-5288-8350"))),
+            comment=c(ORCID="0000-0002-5288-8350")),
+    person("Aliesha", "Krall", role="ctb",
+            email = "akrall@usgs.gov",
+            comment=c(ORCID="0000-0003-2521-5043"))),
   title = "dataRetrieval: R packages for discovering and retrieving water data available from U.S. federal hydrologic web services",
   publisher = "U.S. Geological Survey",
   address="Reston, VA",
diff --git a/vignettes/dataRetrieval.Rmd b/vignettes/dataRetrieval.Rmd
index 3b49e96d..4325e124 100644
--- a/vignettes/dataRetrieval.Rmd
+++ b/vignettes/dataRetrieval.Rmd
@@ -182,7 +182,7 @@ kable(data.df,
 )
 ```
 
-Two output columns that may not be obvious are "srsname" and "casrn". Srsname stands for "Substance Registry Services". Casrn stands for "Chemical Abstracts Service (CAS) Registry Number". More information on CAS can be found [here](https://www.cas.org/support/documentation/chemical-substances/faqs).
+Two output columns that may not be obvious are "srsname" and "casrn". Srsname stands for "Substance Registry Services". Casrn stands for "Chemical Abstracts Service (CAS) Registry Number". 
 
 For unit values data (sensor data measured at regular time intervals such as 15 minutes or hourly), knowing the parameter code and `siteNumber` is enough to make a request for data.  For most variables that are measured on a continuous basis, the USGS also stores the historical data as daily values.  These daily values are statistical summaries of the continuous data, e.g. maximum, minimum, mean, or median. The different statistics are specified by a 5-digit statistics code.