Handbook of Texas Online - Current and historical information about Kendall County. - http://www.tsha.utexas.edu/handbook/online/articles/KK/hck3.html
Amphibians and Reptiles in Kendall County - Texas Cooperative Wildlife Collection list of species found in the county. - http://wfscnet.tamu.edu/tcwc/checklist/KENDA130.HTM