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Michigan Department of Transportation (2023). National Functional Classification (Map). Michigan Department of Transportation. Archived from the original on July 12, 2023. Retrieved July 18, 2023.
Michigan Department of Information Technology (August 1, 2006). "Appendix C: State Trunkline Connector Routes"(PDF). Michigan Geographic Framework (6th ed.). Michigan Department of Information Technology. Archived from the original(PDF) on March 10, 2007. Retrieved January 28, 2016.
Michigan State Historic Preservation Office (n.d.). "Michigan State Capitol". State Register of Historic Sites. Michigan State Historic Preservation Office. Archived from the original on May 5, 2012. Retrieved July 25, 2010.
Editorial Board (April 6, 2004). "Capitol Loop". Our Opinions. Lansing State Journal (Editorial). p. 6A. ISSN0274-9742. OCLC6678181. Archived from the original on July 12, 2018. Retrieved July 12, 2018.
Michigan Department of Transportation (August 29, 2007). "Ingham County"(PDF) (Map). Right-of-Way File Application. Scale not given. Lansing: Michigan Department of Transportation. Sheet 180. OCLC12843916. Archived from the original(PDF) on January 8, 2011. Retrieved October 15, 2008.
Michigan Department of Transportation (August 29, 2007). "Ingham County"(PDF) (Map). Right-of-Way File Application. Scale not given. Lansing: Michigan Department of Transportation. Sheet 180. OCLC12843916. Archived from the original(PDF) on January 8, 2011. Retrieved October 15, 2008.
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Editorial Board (April 6, 2004). "Capitol Loop". Our Opinions. Lansing State Journal (Editorial). p. 6A. ISSN0274-9742. OCLC6678181. Archived from the original on July 12, 2018. Retrieved July 12, 2018.