Michigan Department of Transportation (April 2009). Michigan's Railroad System(PDF) (Map). Lansing: Michigan Department of Transportation. Retrieved September 14, 2010.
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Michigan State Highway Department & Rand McNally (December 15, 1936). Official Michigan Highway Map (Map) (Winter ed.). [c. 1:850,000]. Lansing: Michigan State Highway Department. § M10. OCLC12701143, 317396365. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department & Rand McNally (May 15, 1937). Official Michigan Highway Map (Map) (Summer ed.). [c. 1:850,000]. Lansing: Michigan State Highway Department. § M10. OCLC12701143. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department & Rand McNally (December 1, 1937). Official Michigan Highway Map (Map) (Winter ed.). [c. 1:850,000]. Lansing: Michigan State Highway Department. § M10. OCLC12701143. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department & Rand McNally (July 15, 1940). Official Michigan Highway Map (Map) (Summer ed.). [c. 1:850,000]. Lansing: Michigan State Highway Department. § M10. OCLC12701143. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department (October 1, 1953). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § N9. OCLC12701120. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department (October 1, 1956). Official Highway Map (Map). Scale not given. Lansing: Michigan State Highway Department. Niles inset. OCLC12701120. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department (April 1, 1957). Official Highway Map (Map). Scale not given. Lansing: Michigan State Highway Department. Niles inset. OCLC12701120. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department (1958). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § M11. OCLC12701120, 51856742. Retrieved October 17, 2019 – via Michigan History Center. (Includes all changes through July 1, 1958)
Michigan State Highway Department (1960). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § M11. OCLC12701120, 81552576. Retrieved October 17, 2019 – via Michigan History Center. (Includes all changes through July 1, 1960)
Michigan State Highway Department (1961). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. §§ M11, N8. OCLC12701120, 51857665. Retrieved October 17, 2019 – via Michigan History Center. (Includes all changes through July 1, 1961)
Michigan State Highway Department (1962). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. §§ M11, N8. OCLC12701120, 173191490. Retrieved October 17, 2019 – via Michigan History Center.
Michigan Department of State Highways (1966). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan Department of State Highways. §§ N7–N8. OCLC12701120. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department & Rand McNally (May 1, 1933). Official Michigan Highway Map (Map). [c. 1:840,000]. Lansing: Michigan State Highway Department. § M11. OCLC12701053. Archived from the original on May 10, 2017. Retrieved December 18, 2016 – via Archives of Michigan.
Michigan Department of Transportation (April 23, 2006). National Highway System, Michigan(PDF) (Map). Lansing: Michigan Department of Transportation. Archived from the original(PDF) on August 20, 2008. Retrieved October 7, 2008.
Michigan State Highway Department & Rand McNally (May 1, 1933). Official Michigan Highway Map (Map). [c. 1:840,000]. Lansing: Michigan State Highway Department. § M11. OCLC12701053. Archived from the original on May 10, 2017. Retrieved December 18, 2016 – via Archives of Michigan.
Michigan Department of Transportation (2010). Uniquely Michigan: Official Department of Transportation Map (Map). c. 1:975,000. Lansing: Michigan Department of Transportation. §§ N8–M11. OCLC42778335, 639960603.
Michigan State Highway Department (December 1, 1927). Official Highway Service Map (Map). [c. 1:810,000]. Lansing: Michigan State Highway Department. OCLC12701195, 79754957.
Michigan State Highway Department & H.M. Gousha (July 1, 1930). Official Highway Service Map (Map). [c. 1:810,000]. Lansing: Michigan State Highway Department. OCLC12701195, 79754957.
Michigan State Highway Department & Rand McNally (June 1, 1936). Official Michigan Highway Map (Map). [c. 1:850,000]. Lansing: Michigan State Highway Department. §§ N7–N8, M10. OCLC12701143.
Michigan State Highway Department & Rand McNally (May 1, 1933). Official Michigan Highway Map (Map). [c. 1:840,000]. Lansing: Michigan State Highway Department. § M11. OCLC12701053. Archived from the original on May 10, 2017. Retrieved December 18, 2016 – via Archives of Michigan.
Michigan State Highway Department & Rand McNally (September 1, 1933). Official Michigan Highway Map (Map). [c. 1:840,000]. Lansing: Michigan State Highway Department. § M11. OCLC12701053.
Michigan State Highway Department & Rand McNally (December 15, 1936). Official Michigan Highway Map (Map) (Winter ed.). [c. 1:850,000]. Lansing: Michigan State Highway Department. § M10. OCLC12701143, 317396365. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department & Rand McNally (May 15, 1937). Official Michigan Highway Map (Map) (Summer ed.). [c. 1:850,000]. Lansing: Michigan State Highway Department. § M10. OCLC12701143. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department & Rand McNally (December 1, 1937). Official Michigan Highway Map (Map) (Winter ed.). [c. 1:850,000]. Lansing: Michigan State Highway Department. § M10. OCLC12701143. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department & Rand McNally (July 15, 1940). Official Michigan Highway Map (Map) (Summer ed.). [c. 1:850,000]. Lansing: Michigan State Highway Department. § M10. 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. § M10. OCLC12701143.
Michigan State Highway Department (July 1, 1949). Michigan Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § N8. OCLC12701120.
Michigan State Highway Department (April 15, 1950). Michigan Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § N8. OCLC12701120.
Michigan State Highway Department (April 15, 1953). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § N9. OCLC12701120.
Michigan State Highway Department (October 1, 1953). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § N9. OCLC12701120. Retrieved October 17, 2019 – via Michigan History Center.
"7,260 Cars Travel New Bypass Daily". Niles Daily Star. December 3, 1956. OCLC36065307.[page needed]
Michigan State Highway Department (October 1, 1956). Official Highway Map (Map). Scale not given. Lansing: Michigan State Highway Department. Niles inset. OCLC12701120. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department (April 1, 1957). Official Highway Map (Map). Scale not given. Lansing: Michigan State Highway Department. Niles inset. OCLC12701120. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department (1958). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § M11. OCLC12701120, 51856742. Retrieved October 17, 2019 – via Michigan History Center. (Includes all changes through July 1, 1958)
Michigan State Highway Department (1960). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § M11. OCLC12701120, 81552576. Retrieved October 17, 2019 – via Michigan History Center. (Includes all changes through July 1, 1960)
Michigan State Highway Department (1961). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. §§ M11, N8. OCLC12701120, 51857665. Retrieved October 17, 2019 – via Michigan History Center. (Includes all changes through July 1, 1961)
Michigan State Highway Department (1962). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. §§ M11, N8. OCLC12701120, 173191490. Retrieved October 17, 2019 – via Michigan History Center.
Michigan Department of State Highways (1966). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan Department of State Highways. §§ N7–N8. OCLC12701120. Retrieved October 17, 2019 – via Michigan History Center.