U.S. Route 6 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "U.S. Route 6" in English language version.

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3maps.google.com

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2broermapsonline.org

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2web.archive.org

1^st place

1^st place

5^th place

5^th place

1wikisource.org

27^th place

51^st place

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1,690^th place

998^th place

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1,661^st place

1cahighways.org

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1transportation.org

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broermapsonline.org

National Survey Company, The official National Survey maps and guide for Southern New England: Massachusetts, Connecticut, Rhode Island, 1926, accessed via the Broer Map Library^{[full citation needed]}
Rand McNally Auto Road Atlas, 1926, accessed via the Broer Map Library^{[full citation needed]}

cahighways.org

California Highway Department, 1963 State Highway Map and 1963 District VII State Highway Numbering Map

dot.gov

fhwa.dot.gov

Weingroff, Richard F. "U.S. 6: The Grand Army of the Republic Highway". Highway History. Federal Highway Administration.

iowadot.gov

Iowa Department of Transportation (2012). State of Iowa Transportation Map (PDF) (Map). Ames: Iowa Department of Transportation. Retrieved March 1, 2014.
Iowa State Highway Commission (1973). State of Iowa Transportation Map (PDF) (Map). Ames: Iowa State Highway Commission. Retrieved September 29, 2010.
Iowa Department of Transportation (2003). State of Iowa Transportation Map (PDF) (Map). Ames: Iowa Department of Transportation. Retrieved December 27, 2013.
Iowa Department of Transportation (2004). State of Iowa Transportation Map (PDF) (Map). Ames: Iowa Department of Transportation. Retrieved September 29, 2010.

kurumi.com

Connecticut State Highway Department, state map, 1932^{[full citation needed]}

maps.google.com

"Overview of Iowa 925" (Map). Google Maps. Retrieved September 29, 2010.
"Overview of Iowa 926" (Map). Google Maps. Retrieved September 29, 2010.
"Overview of Iowa 927" (Map). Google Maps. Retrieved September 29, 2010.

transportation.org

sp.route.transportation.org

Special Committee on U.S. Route Numbering (May 14, 2015). "Special Committee on U.S. Route Numbering Spring 2015 Report to the Standing Committee on Highways" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (PDF) on June 3, 2019. Retrieved June 6, 2015.

utah.edu

udn.lib.utah.edu

"Roosevelt Highway at Last Gets Official Routing over No. 50". Times Independent. December 31, 1936. p. 5. Archived from the original on February 15, 2012.

web.archive.org

"Roosevelt Highway at Last Gets Official Routing over No. 50". Times Independent. December 31, 1936. p. 5. Archived from the original on February 15, 2012.
Special Committee on U.S. Route Numbering (May 14, 2015). "Special Committee on U.S. Route Numbering Spring 2015 Report to the Standing Committee on Highways" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (PDF) on June 3, 2019. Retrieved June 6, 2015.

wikimedia.org

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

en.wikisource.org

Joint Board on Interstate Highways (1925). "Appendix VI: Descriptions of the Interstate Routes Selected, with Numbers Assigned". Report of Joint Board on Interstate Highways, October 30, 1925, Approved by the Secretary of Agriculture, November 18, 1925 (Report). Washington, DC: United States Department of Agriculture. p. 49. OCLC 733875457, 55123355, 71026428. Retrieved November 14, 2017 – via Wikisource.

worldcat.org

worldcat.org

Joint Board on Interstate Highways (1925). "Appendix VI: Descriptions of the Interstate Routes Selected, with Numbers Assigned". Report of Joint Board on Interstate Highways, October 30, 1925, Approved by the Secretary of Agriculture, November 18, 1925 (Report). Washington, DC: United States Department of Agriculture. p. 49. OCLC 733875457, 55123355, 71026428. Retrieved November 14, 2017 – via Wikisource.

search.worldcat.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.