The Texas Rangers Law Enforcement Association - History of the oldest law enforcement body on the North American Continent with statewide jurisdiction. - http://www.texasrangers.org/
Handbook of Texas Online: Texas Rangers - Provides information on the history of the Texas Rangers. - http://www.tsha.utexas.edu/handbook/online/articles/TT/met4.html
Texas Rangers - History of the Texas Rangers from the Texas Department of Public Safety. - http://www.txdps.state.tx.us/director_staff/texas_rangers/#Historical Development:
Texas Ranger Hall of Fame and Museum - Located in Waco, Texas, The Texas Ranger Hall of Fame and Museum is dedicated to the history and popular culture of the legendary Texas Rangers. - http://www.texasranger.org/