Michigan Department of Transportation (April 23, 2006). National Highway System, Michigan(PDF) (Map). Scale not given. Lansing: Michigan Department of Transportation. Archived from the original(PDF) on October 4, 2012. Retrieved October 7, 2008.
Michigan Department of Transportation (2007). Statewide AADT Map(PDF) (Map). Scale not given. Lansing: Michigan Department of Transportation. Retrieved October 5, 2008.
Michigan State Highway Department & Rand McNally (December 1, 1939). Official Michigan Highway Map (Map) (Winter ed.). [c. 1:850,000]. Lansing: Michigan State Highway Department. § A4. OCLC12701143. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department (1963). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § A4. OCLC12701120. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department (1964). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § A4. OCLC12701120, 81213707. Retrieved October 17, 2019 – via Michigan History Center.
Michigan Department of Transportation (April 23, 2006). National Highway System, Michigan(PDF) (Map). Scale not given. Lansing: Michigan Department of Transportation. Archived from the original(PDF) on October 4, 2012. Retrieved October 7, 2008.
Michigan Department of Transportation (2008). Michigan: Official Department of Transportation Map (Map). c. 1:975,000. Lansing: Michigan Department of Transportation. § A4. OCLC42778335.
Michigan State Highway Department & Rand McNally (December 1, 1939). Official Michigan Highway Map (Map) (Winter ed.). [c. 1:850,000]. Lansing: Michigan State Highway Department. § A4. OCLC12701143. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department & Rand McNally (December 1, 1940). Official Michigan Highway Map (Map) (Winter ed.). [c. 1:850,000]. Lansing: Michigan State Highway Department. § A4. OCLC12701143.
Michigan State Highway Department (1963). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § A4. OCLC12701120. Retrieved October 17, 2019 – via Michigan History Center.
worldcat.org
Michigan State Highway Department (1964). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § A4. OCLC12701120, 81213707. Retrieved October 17, 2019 – via Michigan History Center.