State of Vermont Board of Libraries (April 28, 2008). "Vermont Named State Highways and Bridges"(PDF). Department of Libraries, State of Vermont. Retrieved April 1, 2015.
vtransplanning.vermont.gov
Traffic Research Unit (May 2013). "2012 (Route Log) AADTs for State Highways"(PDF). Policy, Planning and Intermodal Development Division, Vermont Agency of Transportation. Retrieved March 9, 2015.