Handbook of Texas Online
- Current and historical information about Mason County.
- http://www.tsha.utexas.edu/handbook/online/articles/MM/hcm4.html

JJ's Rockin' Retreat
- Historic ranch offers outdoor recreation and accommodations. Features history, activities, packages, lodging information.
- http://www.texasranchfun.com

Dutch Mountain Ranch
- Rugged granite outcroppings, an abundance of wildflowers, oak trees, hills, and wildlife are here for artists, rock hounds, bird watchers, nature lovers, photographers, hunters, and fishermen.
- http://www.centuryranchlodging.com/dutchMt.html

The Political Graveyard: Mason County, Tex.
- Information about politicians that lived or died in the county.
- http://www.politicalgraveyard.com/geo/TX/MZ.html

Amphibians and Reptiles in Mason County
- Texas Cooperative Wildlife Collection list of species found in the county.
- http://wfscnet.tamu.edu/tcwc/checklist/MASON157.HTM