Butterflies of Erath County, Texas - Information about and pictures of all the known species of butterflies in the county. - http://www.butterfliesandmoths.org/map?dc=5617&_dcc=1&si=44
Handbook of Texas Online - Current and historical information about Erath County. - http://www.tsha.utexas.edu/handbook/online/articles/EE/hce6.html
Amphibians and Reptiles in Erath County - Texas Cooperative Wildlife Collection list of species found in the county. - http://wfscnet.tamu.edu/tcwc/checklist/ERATH072.HTM