Butterflies of Collin County, Texas - Information about and pictures of all the known species of butterflies in the county. - http://www.butterfliesandmoths.org/map?dc=5516&_dcc=1&si=44
Handbook of Texas Online: Collin County - Current and historical information about the county. - http://www.tsha.utexas.edu/handbook/online/articles/CC/hcc16.html
League of Women Voters of Collin County - Non-partisan organization encouraging informed and active participation of citizens in government. - http://www.lwvcollin.org/
Amphibians and Reptiles in Collin County - Texas Cooperative Wildlife Collection list of species found in the county. - http://wfscnet.tamu.edu/tcwc/checklist/COLLI043.HTM
Rape Crisis Center of Collin County - Information on the effects of all types of sexual assault, and the services that the center provides. All information is available in English and Spanish. - http://www.rcccc.org