Texas Trophy Hunters - www.ttha.com

Dallas Safari Club - www.biggame.org

Texas Deer Association - www.texasdeerassociation.com

North American Whitetail - www.northamericanwhitetail.com

Rocky Top Therapy - www.rockytoptherapy.org

Texas handbook for the history of the Four Sixes - www.tshaonline.org/handbook/online/articles/FF/apf1.html