Butterflies of Fannin County, Texas
- Information about and pictures of all the known species of butterflies in the county.
- http://www.butterfliesandmoths.org/map?dc=1650&_dcc=1&si=44

Handbook of Texas Online
- Current and historical information about Fannin County.
- http://www.tsha.utexas.edu/handbook/online/articles/FF/hcf2.html

Bonham State Park
- A 261-acre park located near Bonham, Texas in Fannin County northeast of Dallas. It includes a 65-acre lake, rolling prairies, and woodlands.
- http://www.tpwd.state.tx.us/spdest/findadest/parks/bonham/

Amphibians and Reptiles in Fannin County
- Texas Cooperative Wildlife Collection list of species found in the county.
- http://wfscnet.tamu.edu/tcwc/checklist/FANNI074.HTM