U.S. Route 23 in Michigan (English Wikipedia)

Natzke, Stefan; Neathery, Mike & Adderly, Kevin (June 20, 2012). "What is the National Highway System?". National Highway System. Federal Highway Administration. Retrieved July 1, 2012.
Weingroff, Richard (July 16, 2013) [1998]. "Part I: History". The Dwight D. Eisenhower System of Interstate and Defense Highways. Federal Highway Administration. Retrieved August 18, 2013.

iosconews.com (Global: low place; English: low place)

"US 23 Heritage Route Gets Official Designation". Iosco County News-Herald. East Tawas, Michigan. May 12, 2004. Retrieved July 14, 2012.

livingstondaily.com (Global: low place; English: low place)

Timar, Jennifer (July 28, 2020). "MDOT reveals US-23 Flex Route extension plans in Livingston County". Livingston Daily. Retrieved August 8, 2020.

mackinacjournal.com (Global: low place; English: low place)

Friday, Matthew (December 7, 2011). "Bridging Our Local History". Mackinac Journal. Archived from the original on April 26, 2012. Retrieved December 30, 2011.

maps.google.com (Global: 2,258^th place; English: 1,630^th place)

"Overview Map of US 23 in Michigan" (Map). Google Maps. Retrieved April 18, 2011.

measuringworth.com (Global: 2,465^th place; English: 1,383^rd place)

Johnston, Louis & Williamson, Samuel H. (2023). "What Was the U.S. GDP Then?". MeasuringWorth. Retrieved November 30, 2023. United States Gross Domestic Product deflator figures follow the MeasuringWorth series.

michigan.gov (Global: 4,936^th place; English: 2,833^rd place)

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 (April 2009). Michigan's Railroad System (PDF) (Map). Scale not given. Lansing: Michigan Department of Transportation. Archived from the original (PDF) on September 4, 2012. Retrieved September 14, 2010.

michiganhighways.org (Global: low place; English: low place)

Michigan Department of Transportation (February 1999). "Final Environmental Impact Statement and Section 4(f) Evaluation for the Proposed US 23 Freeway Extension Project Phase I: Arenac and Iosco Counties, Michigan (Executive Summary)" (PDF). Lansing: Michigan Department of Transportation. Retrieved April 18, 2011 – via Michigan Highways.

michiganology.org (Global: low place; English: low place)

Michigan State Highway Department (July 1, 1919). State of Michigan (Map). Scale not given. Lansing: Michigan State Highway Department. Lower Peninsula sheet. OCLC 15607244. Retrieved October 17, 2019 – via Michigan History Center.
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. §§ G13–H13. OCLC 12701143, 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. § E10. OCLC 12701143. 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. § E10. OCLC 12701143. Retrieved October 17, 2019 – via Michigan History Center.
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. §§ E12–F12. OCLC 12701143. 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. §§ F11–F12. OCLC 12701143. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department (July 1, 1951). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § N12. OCLC 12701120. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department (April 15, 1952). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § N12. OCLC 12701120. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department (October 1, 1953). Official Highway Map (Map). Scale not given. Lansing: Michigan State Highway Department. Saginaw inset. OCLC 12701120. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department (1961). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § J12. OCLC 12701120, 51857665. Retrieved October 17, 2019 – via Michigan History Center. (Includes all changes through July 1, 1961)
Michigan State Highway Department (April 1, 1957). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § M12. OCLC 12701120. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department (1960). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. §§ K12–L12, M12. OCLC 12701120, 81552576. Retrieved October 17, 2019 – via Michigan History Center. (Includes all changes through July 1, 1960)
Michigan State Highway Department (1962). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. §§ J12–K12, L12, N12. OCLC 12701120, 173191490. Retrieved October 17, 2019 – via Michigan History Center.
Michigan Department of State Highways (1967). Michigan Water-Winter Wonderland: Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan Department of State Highways. §§ I12–J12. OCLC 12701120. Retrieved October 17, 2019 – via Michigan History Center.
Michigan Department of State Highways (1968). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan Department of State Highways. §§ I12–J12. OCLC 12701120. Retrieved October 17, 2019 – via Michigan History Center.
Michigan Department of State Highways and Transportation (1974). Michigan, Great Lake State: Official Transportation Map (Map). c. 1:918,720. Lansing: Michigan Department of State Highways and Transportation. §§ H10–J12. OCLC 12701177, 83138602. Retrieved October 17, 2019 – via Michigan History Center.
Michigan Department of Transportation (1986). Yes Michigan: Official Transportation Map (Map). c. 1:918,720. Lansing: Michigan Department of Transportation. §§ J12–K12. OCLC 12701177. Retrieved October 17, 2019 – via Michigan History Center.
Michigan Department of Transportation (1987). Yes Michigan: Official Transportation Map (Map). c. 1:918,720. Lansing: Michigan Department of Transportation. §§ J12–K12. OCLC 12701177. Retrieved October 17, 2019 – via Michigan History Center.

mlive.com (Global: 966^th place; English: 561^st place)

Moran, Darcie (November 15, 2017). "New US 23 Flex Route Is Open North of Ann Arbor—But Not All of It". MLive. Booth Newspapers. Retrieved November 18, 2017.
Knake, Lindsay (November 4, 2016). "Major Overhaul of US 23 North of Ann Arbor Begins Monday, Nov. 7". MLive. Booth Newspapers. Retrieved June 5, 2017.
Afana, Dana (April 1, 2019). "US 23 Flex Route to Get 7-Mile Extension to I-96". MLive. Booth Newspapers. Retrieved October 4, 2019.
French, Caitlyn (March 28, 2022). "Roundabout Replacing US-23 Bridge over M-13 in Arenac County, Says MDOT". MLive. Booth Newspapers. Retrieved May 1, 2022.
Bush, Allison (December 8, 2010). "Officials Reveal Plans for Possible Extension of I-475 to US 23; Residents Share Concerns". The Flint Journal. Retrieved April 18, 2011.

nationalbridges.com (Global: low place; English: low place)

Federal Highway Administration (2010). "71171073000B020". National Bridge Inventory. Federal Highway Administration. Archived from the original on May 16, 2012. Retrieved December 30, 2011.

news.google.com (Global: 59^th place; English: 45^th place)

Banas, Teri (September 15, 1987). "Bridge Makes City Famous: Residents Say Life is Good in Zilwaukee". Argus-Press. Owosso, Michigan. Associated Press. p. 29. OCLC 36134862.
"Fenton–Clio X-Way Big Time Saver". The Owosso Argus-Press. Associated Press. June 28, 1958. p. 9. OCLC 9802802. Retrieved April 20, 2011 – via Google News.
"Formal opening of US 23 strip set for October 1". Toledo Blade. September 23, 1959. p. 37. OCLC 12962635. Retrieved February 11, 2010 – via Google News.
"Michigan Delays Road Number System". Toledo Blade. June 4, 1959. p. 11. OCLC 12962635. Retrieved November 21, 2010 – via Google News.
"Electronic Wonder: State Seeks Highway". The Michigan Daily. University of Michigan, Ann Arbor. July 13, 1961. p. 3. ISSN 0745-967X. OCLC 923790299. Retrieved August 25, 2013 – via Google News.
"US 23 Link Opens North of Ann Arbor". The Blade. Toledo, Ohio. September 29, 1962. p. 13. OCLC 12962717. Retrieved April 20, 2011 – via Google News.
"Freeway Section from Milan Opens". The Blade. Toledo, Ohio. Associated Press. November 2, 1962. p. 1. OCLC 12962717. Retrieved April 20, 2011 – via Google News.
"Highway Additions Requested By State". The Owosso Argus-Press. Associated Press. November 14, 1968. p. 7. OCLC 9802802. Retrieved December 5, 2010 – via Google News.
"Michigan Asks To Reroute US 223". The Blade. Toledo, Ohio. September 9, 1965. p. 29. OCLC 12962717. Retrieved December 19, 2010 – via Google News.
Staff writer (September 19, 1988). "Zilwaukee Bridge Now Open North, South—Partly". The Blade. Toledo, Ohio. p. 1. OCLC 12962717 – via Google News.

newspapers.com (Global: 55^th place; English: 36^th place)

"World's Costliest Wonder Bridge Opens Today, Links Michigan's Two Peninsulas: Williams Leads First Caravan Across Bridge". Ludington Daily News. Associated Press. November 1, 1957. p. 1. OCLC 27033604. Retrieved July 13, 2018 – via Newspapers.com.
"Around the State: West Branch". Traverse City Record-Eagle. United Press International. November 2, 1973. p. 3. OCLC 30098364. Retrieved July 11, 2018 – via Newspapers.com.
"Road Closed US 23 Freeway Plan Takes Right Turn into History". Editorial. Detroit Free Press. June 14, 2002. p. A12. Retrieved July 13, 2018 – via Newspapers.com.

oclc.org (Global: 1,391^st place; English: 1,017^th place)

seekingmichigan.contentdm.oclc.org

Michigan State Highway Department & Rand McNally (May 1, 1933). Official Michigan Highway Map (Map). [c. 1:840,000]. Lansing: Michigan State Highway Department. §§ G13–H13. OCLC 12701053. Archived from the original on May 10, 2017. Retrieved December 18, 2016 – via Archives of Michigan.
Michigan State Highway Department & Rand McNally (July 1, 1941). Official Michigan Highway Map (Map) (Summer ed.). [c. 1:850,000]. Lansing: Michigan State Highway Department. § L12. OCLC 12701143. Archived from the original on April 22, 2017. Retrieved January 2, 2017 – via Archives of Michigan.

state.mi.us (Global: low place; English: 7,374^th place)

mdotgis.state.mi.us

Michigan Department of Transportation (2021). Next Generation PR Finder (Map). Michigan Department of Transportation. Retrieved October 11, 2021.

mdotnetpublic.state.mi.us

Bureau of Transportation Planning (2008). "Traffic Monitoring Information System". Michigan Department of Transportation. Retrieved April 19, 2011.

state.oh.us (Global: 5,859^th place; English: 3,179^th place)

dot.state.oh.us

Ohio Department of Transportation (1977). Ohio Transportation Map (PDF) (Map). 1:554,400. Columbus: Ohio Department of Transportation. §§ E2–F3. OCLC 5673562, 49061100. Retrieved December 31, 2010.

web.archive.org (Global: 1^st place; English: 1^st place)

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 (April 2009). Michigan's Railroad System (PDF) (Map). Scale not given. Lansing: Michigan Department of Transportation. Archived from the original (PDF) on September 4, 2012. Retrieved September 14, 2010.
Michigan State Highway Department & Rand McNally (May 1, 1933). Official Michigan Highway Map (Map). [c. 1:840,000]. Lansing: Michigan State Highway Department. §§ G13–H13. OCLC 12701053. Archived from the original on May 10, 2017. Retrieved December 18, 2016 – via Archives of Michigan.
Michigan State Highway Department & Rand McNally (July 1, 1941). Official Michigan Highway Map (Map) (Summer ed.). [c. 1:850,000]. Lansing: Michigan State Highway Department. § L12. OCLC 12701143. Archived from the original on April 22, 2017. Retrieved January 2, 2017 – via Archives of Michigan.
Federal Highway Administration (2010). "71171073000B020". National Bridge Inventory. Federal Highway Administration. Archived from the original on May 16, 2012. Retrieved December 30, 2011.
Friday, Matthew (December 7, 2011). "Bridging Our Local History". Mackinac Journal. Archived from the original on April 26, 2012. Retrieved December 30, 2011.

wikimedia.org (Global: low place; English: low place)

commons.wikimedia.org

Bureau of Public Roads & American Association of State Highway Officials (November 11, 1926). United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials (Map). 1:7,000,000. Washington, DC: United States Geological Survey. OCLC 32889555. Retrieved November 7, 2013 – via Wikimedia Commons.

wikisource.org (Global: 27^th place; English: 51^st place)

en.wikisource.org

Kulsea, Bill & Shawver, Tom (1980). Making Michigan Move: A History of Michigan Highways and the Michigan Department of Transportation. Lansing: Michigan Department of Transportation. p. 27. OCLC 8169232. Retrieved January 18, 2021 – via Wikisource.

worldcat.org (Global: 5^th place; English: 5^th place)

search.worldcat.org

McNichol, Dan (2006). The Roads that Built America. New York: Sterling. p. 74. ISBN 1-4027-3468-9. OCLC 63377558.
Hyde, Charles K. (1993). Historic Highway Bridges of Michigan. Detroit: Wayne State University Press. p. 168. ISBN 0-8143-2448-7. OCLC 27011079. Retrieved September 7, 2019 – via Archive.org.
Banas, Teri (September 15, 1987). "Bridge Makes City Famous: Residents Say Life is Good in Zilwaukee". Argus-Press. Owosso, Michigan. Associated Press. p. 29. OCLC 36134862.
Rand McNally (2008). "Michigan" (Map). The Road Atlas (2008 ed.). 1:1,267,200. Chicago: Rand McNally. pp. 50–51. §§ F8–T11. ISBN 0-528-93981-5. OCLC 226315010.
Morrison, Roger L. (Autumn 1937). "The History and Development of Michigan Highways". Michigan Alumnus Quarterly Review. Vol. 39, no. 54. Ann Arbor: University of Michigan Bureau of Alumni Relations. pp. 59–73. OCLC 698029175.
Mason, Philip P. (1959). Michigan Highways From Indian Trails to Expressways. Ann Arbor, Michigan: Braun-Brumfield. p. 18. OCLC 23314983.
Barnett, LeRoy (2004). A Drive Down Memory Lane: The Named State and Federal Highways of Michigan. Allegan Forest, Michigan: The Priscilla Press. pp. 74–5. ISBN 1-886167-24-9. OCLC 57425393.
Kulsea, Bill & Shawver, Tom (1980). Making Michigan Move: A History of Michigan Highways and the Michigan Department of Transportation. Lansing: Michigan Department of Transportation. p. 27. OCLC 8169232. Retrieved January 18, 2021 – via Wikisource.
Michigan State Highway Department (July 1, 1919). State of Michigan (Map). Scale not given. Lansing: Michigan State Highway Department. Lower Peninsula sheet. OCLC 15607244. Retrieved October 17, 2019 – via Michigan History Center.
"Michigan May Do Well Following Wisconsin's Road Marking System". The Grand Rapids Press. September 20, 1919. p. 10. OCLC 9975013.
Bureau of Public Roads & American Association of State Highway Officials (November 11, 1926). United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials (Map). 1:7,000,000. Washington, DC: United States Geological Survey. OCLC 32889555. Retrieved November 7, 2013 – via Wikimedia Commons.
Michigan State Highway Department & Rand McNally (October 1, 1931). Official Highway Service Map (Map). [c. 1:840,000]. Lansing: Michigan State Highway Department. §§ H12–I12. OCLC 12701053.
Michigan State Highway Department & Rand McNally (October 1, 1932). Official Michigan Highway Map (Map). [c. 1:840,000]. Lansing: Michigan State Highway Department. §§ H12–I12. OCLC 12701053.
Michigan State Highway Department & Rand McNally (May 1, 1933). Official Michigan Highway Map (Map). [c. 1:840,000]. Lansing: Michigan State Highway Department. §§ G13–H13. OCLC 12701053. Archived from the original on May 10, 2017. Retrieved December 18, 2016 – via Archives of Michigan.
Michigan State Highway Department & Rand McNally (September 1, 1934). Official Michigan Highway Map (Map). [c. 1:850,000]. Lansing: Michigan State Highway Department. §§ G13–H13. OCLC 12701143.
Michigan State Highway Department & Rand McNally (June 1, 1936). Official Michigan Highway Map (Map). [c. 1:850,000]. Lansing: Michigan State Highway Department. §§ G13–H13. OCLC 12701143.
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. § E10. OCLC 12701143. 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. § E10. OCLC 12701143. Retrieved October 17, 2019 – via Michigan History Center.
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. §§ E12–F12. OCLC 12701143. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department & Rand McNally (April 15, 1940). Official Michigan Highway Map (Map) (Spring ed.). [c. 1:850,000]. Lansing: Michigan State Highway Department. §§ E12–F12. OCLC 12701143.
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. §§ F11–F12. OCLC 12701143. 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. §§ F11–F12. OCLC 12701143.
Michigan State Highway Department & Rand McNally (December 1, 1940). Official Michigan Highway Map (Map) (Winter ed.). Scale not given. Lansing: Michigan State Highway Department. Bay City inset. OCLC 12701143.
Michigan State Highway Department & Rand McNally (March 21, 1941). Official Michigan Highway Map (Map) (Spring ed.). Scale not given. Lansing: Michigan State Highway Department. Bay City inset. OCLC 12701143.
Michigan State Highway Department & Rand McNally (March 21, 1941). Official Michigan Highway Map (Map) (Spring ed.). [c. 1:850,000]. Lansing: Michigan State Highway Department. § L12. OCLC 12701143.
Michigan State Highway Department & Rand McNally (July 1, 1941). Official Michigan Highway Map (Map) (Summer ed.). [c. 1:850,000]. Lansing: Michigan State Highway Department. § L12. OCLC 12701143. Archived from the original on April 22, 2017. Retrieved January 2, 2017 – via Archives of Michigan.
Michigan State Highway Department (October 1, 1945). Official Highway Map of Michigan (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § E12. OCLC 554645076.
Michigan State Highway Department (April 15, 1948). Michigan Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. §§ E11, N12. OCLC 12701120.
Michigan State Highway Department (July 1, 1951). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § N12. OCLC 12701120. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department (April 15, 1952). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § N12. OCLC 12701120. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department (April 15, 1953). Official Highway Map (Map). Scale not given. Lansing: Michigan State Highway Department. Saginaw inset. OCLC 12701120.
Michigan State Highway Department (October 1, 1953). Official Highway Map (Map). Scale not given. Lansing: Michigan State Highway Department. Saginaw inset. OCLC 12701120. Retrieved October 17, 2019 – via Michigan History Center.
"World's Costliest Wonder Bridge Opens Today, Links Michigan's Two Peninsulas: Williams Leads First Caravan Across Bridge". Ludington Daily News. Associated Press. November 1, 1957. p. 1. OCLC 27033604. Retrieved July 13, 2018 – via Newspapers.com.
Michigan State Highway Department (April 1, 1957). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § M12. OCLC 12701120. Retrieved October 17, 2019 – via Michigan History Center.
"Fenton–Clio X-Way Big Time Saver". The Owosso Argus-Press. Associated Press. June 28, 1958. p. 9. OCLC 9802802. Retrieved April 20, 2011 – via Google News.
"Formal opening of US 23 strip set for October 1". Toledo Blade. September 23, 1959. p. 37. OCLC 12962635. Retrieved February 11, 2010 – via Google News.
"Michigan Delays Road Number System". Toledo Blade. June 4, 1959. p. 11. OCLC 12962635. Retrieved November 21, 2010 – via Google News.
"Electronic Wonder: State Seeks Highway". The Michigan Daily. University of Michigan, Ann Arbor. July 13, 1961. p. 3. ISSN 0745-967X. OCLC 923790299. Retrieved August 25, 2013 – via Google News.
"Driverless Auto Being Developed: Could Be Ready in 15 Years, Ohio Researcher Says". The New York Times. December 11, 1966. p. 132. ISSN 0362-4331. OCLC 1645522.
"US 23 Link Opens North of Ann Arbor". The Blade. Toledo, Ohio. September 29, 1962. p. 13. OCLC 12962717. Retrieved April 20, 2011 – via Google News.
"Freeway Section from Milan Opens". The Blade. Toledo, Ohio. Associated Press. November 2, 1962. p. 1. OCLC 12962717. Retrieved April 20, 2011 – via Google News.
Michigan Department of State Highways (1967). Michigan Water-Winter Wonderland: Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan Department of State Highways. §§ I12–J12. OCLC 12701120. Retrieved October 17, 2019 – via Michigan History Center.
Michigan Department of State Highways (1968). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan Department of State Highways. §§ I12–J12. OCLC 12701120. Retrieved October 17, 2019 – via Michigan History Center.
"Highway Additions Requested By State". The Owosso Argus-Press. Associated Press. November 14, 1968. p. 7. OCLC 9802802. Retrieved December 5, 2010 – via Google News.
"Around the State: West Branch". Traverse City Record-Eagle. United Press International. November 2, 1973. p. 3. OCLC 30098364. Retrieved July 11, 2018 – via Newspapers.com.
"Michigan Asks To Reroute US 223". The Blade. Toledo, Ohio. September 9, 1965. p. 29. OCLC 12962717. Retrieved December 19, 2010 – via Google News.
Michigan Department of State Highways and Transportation (1978). Michigan, Great Lake State: Official Transportation Map (Map) (1978–1979 ed.). c. 1:918,720. Lansing: Michigan Department of State Highways and Transportation. § N12. OCLC 12701177.
Staff writer (September 19, 1988). "Zilwaukee Bridge Now Open North, South—Partly". The Blade. Toledo, Ohio. p. 1. OCLC 12962717 – via Google News.
"A Brief History of Paving". The Grand Rapids Press. March 1, 2010. p. A8. OCLC 9975013.
Michigan Department of Transportation (1986). Yes Michigan: Official Transportation Map (Map). c. 1:918,720. Lansing: Michigan Department of Transportation. §§ J12–K12. OCLC 12701177. Retrieved October 17, 2019 – via Michigan History Center.
Michigan Department of Transportation (1987). Yes Michigan: Official Transportation Map (Map). c. 1:918,720. Lansing: Michigan Department of Transportation. §§ J12–K12. OCLC 12701177. Retrieved October 17, 2019 – via Michigan History Center.
"I-475–US 23 Link Would Unify Community, Spur Growth in Area". Editorial. The Flint Journal. June 7, 1998. p. H2. OCLC 9974225.
"I-475 Extension Shelved". The Flint Journal. May 20, 2011. p. A2. OCLC 9974225.
Davis, R. Matt (May 1, 1986). "Signs to Mark Lake Circle Tour". The Daily Mining Gazette. Houghton, Michigan. p. 16. OCLC 9940134.
Jankoviak, Shawna (November 25, 2011). "Board Votes To Support US 23 Tourism Promotion". Cheboygan Daily Tribune. p. A3. ISSN 0746-665X. OCLC 849664529.
Leslie, Joyce (September 5, 2003). "State Street Bridge Wasn't Site for a Walk in 1877". Cheboygan Daily Tribune. Features section. ISSN 0746-665X. OCLC 849664529.
Web, Brenda (December 1, 2000). "Drawbridge Listed as Historic Place". Cheboygan Daily Tribune. News section. ISSN 0746-665X. OCLC 849664529.

worldcat.org

Michigan Department of Transportation (2010). Uniquely Michigan: Official Department of Transportation Map (Map). c. 1:975,000. Lansing: Michigan Department of Transportation. §§ D10–N12. OCLC 42778335, 639960603.
Michigan State Highway Department (May 1, 1929). Official Highway Service Map (Map). [c. 1:810,000]. Lansing: Michigan State Highway Department. OCLC 12701195, 79754957.
Michigan State Highway Department & H.M. Gousha (January 1, 1930). Official Highway Service Map (Map). [c. 1:810,000]. Lansing: Michigan State Highway Department. OCLC 12701195, 79754957.
Michigan State Highway Department & H.M. Gousha (November 1, 1930). Official Highway Service Map (Map). [c. 1:810,000]. Lansing: Michigan State Highway Department. OCLC 12701195, 79754957.
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. §§ G13–H13. OCLC 12701143, 317396365. Retrieved October 17, 2019 – via Michigan History Center.
Michigan State Highway Department (May 1, 1947). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. §§ E11, N12. OCLC 12701120, 494733404.
Michigan State Highway Department (1961). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § J12. OCLC 12701120, 51857665. Retrieved October 17, 2019 – via Michigan History Center. (Includes all changes through July 1, 1961)
Michigan State Highway Department (October 1, 1957). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § M12. OCLC 12701120, 367386492.
Michigan State Highway Department (1960). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. §§ K12–L12, M12. OCLC 12701120, 81552576. Retrieved October 17, 2019 – via Michigan History Center. (Includes all changes through July 1, 1960)
Michigan State Highway Department (1962). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. §§ J12–K12, L12, N12. OCLC 12701120, 173191490. Retrieved October 17, 2019 – via Michigan History Center.
Michigan Department of State Highways and Transportation (1974). Michigan, Great Lake State: Official Transportation Map (Map). c. 1:918,720. Lansing: Michigan Department of State Highways and Transportation. §§ H10–J12. OCLC 12701177, 83138602. Retrieved October 17, 2019 – via Michigan History Center.
Ohio Department of Transportation (1977). Ohio Transportation Map (PDF) (Map). 1:554,400. Columbus: Ohio Department of Transportation. §§ E2–F3. OCLC 5673562, 49061100. Retrieved December 31, 2010.

U.S. Route 23 in Michigan (English Wikipedia)

archive.org (Global: 6th place; English: 6th place)

dot.gov (Global: 1,690th place; English: 998th place)

fhwa.dot.gov

iosconews.com (Global: low place; English: low place)

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measuringworth.com (Global: 2,465th place; English: 1,383rd place)

michigan.gov (Global: 4,936th place; English: 2,833rd place)

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mlive.com (Global: 966th place; English: 561st place)

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news.google.com (Global: 59th place; English: 45th place)

newspapers.com (Global: 55th place; English: 36th place)

oclc.org (Global: 1,391st place; English: 1,017th place)

seekingmichigan.contentdm.oclc.org

state.mi.us (Global: low place; English: 7,374th place)

mdotgis.state.mi.us

mdotnetpublic.state.mi.us

state.oh.us (Global: 5,859th place; English: 3,179th place)

dot.state.oh.us

web.archive.org (Global: 1st place; English: 1st place)

wikimedia.org (Global: low place; English: low place)

commons.wikimedia.org

wikisource.org (Global: 27th place; English: 51st place)

en.wikisource.org

worldcat.org (Global: 5th place; English: 5th place)

search.worldcat.org

worldcat.org

archive.org (Global: 6^th place; English: 6^th place)

dot.gov (Global: 1,690^th place; English: 998^th place)

maps.google.com (Global: 2,258^th place; English: 1,630^th place)

measuringworth.com (Global: 2,465^th place; English: 1,383^rd place)

michigan.gov (Global: 4,936^th place; English: 2,833^rd place)

mlive.com (Global: 966^th place; English: 561^st place)

news.google.com (Global: 59^th place; English: 45^th place)

newspapers.com (Global: 55^th place; English: 36^th place)

oclc.org (Global: 1,391^st place; English: 1,017^th place)

state.mi.us (Global: low place; English: 7,374^th place)

state.oh.us (Global: 5,859^th place; English: 3,179^th place)

web.archive.org (Global: 1^st place; English: 1^st place)

wikisource.org (Global: 27^th place; English: 51^st place)

worldcat.org (Global: 5^th place; English: 5^th place)