Bureau of Transportation Statistics (June 13, 2022). "National Highway Planning Network" (Map). National Transportation Atlas Database. Washington, D.C.: United States Department of Transportation. Retrieved April 29, 2023.
Knoxville-Knox County Metropolitan Planning Commission; Barton-Aschman Associates; Knoxville International Energy Exposition; K-Trans (December 1982). 1982 World's Fair Transportation System Evaluation (Report). Office of Planning Assistance, Urban Mass Transportation Administration. DOT-I-83-4. Retrieved June 6, 2020 – via Google Books.