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Rogers, Frank F. (1922) Biennial Report of the State Highway Commissioner for the Fiscal Years ending June 30, 1921, and June 30, 1922 (9 ed.), Lansing, MI: Fort Wayne Printing, p. 6, plate I.
Federal Highway Administration (1977) America's Highways, 1776–1976: A History of the Federal-Aid Program, Washington, DC: US Government Printing Office, p. 127 OCLC: 3280344.
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Federal Highway Administration (1977) America's Highways, 1776–1976: A History of the Federal-Aid Program, Washington, DC: US Government Printing Office, p. 127 OCLC: 3280344.
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