Illinois Department of Transportation. Illinois Highway Map (地图) 2007–08. 1:762,500. Springfield: Illinois Department of Transportation. 2007 [May 26, 2012]. OCLC 244286974. (原始内容存档于2016-03-08).
Illinois Division of Highways. Illinois Official Highway Map (地图). 1:805,000. Springfield: Illinois Division of Highways. Chicago and Vicinity inset. April 1, 1955 [November 18, 2014]. OCLC 713840599. (原始内容存档于2020-12-03) –通过Illinois Digital Collections.
legendsofamerica.com
Route 66 Timeline. Legends of America. [April 15, 2012]. (原始内容存档于2018-12-25).
Droz, Robert V. US 66: In the Beginning. U.S. Highways: From US 1 to (US 830). Self-published. December 10, 2006 [April 15, 2012]. (原始内容存档于2012年4月19日).[來源可靠?]
Droz, Robert V. US 66: In the Beginning. U.S. Highways: From US 1 to (US 830). Self-published. December 10, 2006 [April 15, 2012]. (原始内容存档于2012年4月19日).[來源可靠?]
Illinois Department of Transportation. Illinois Highway Map (地图) 2007–08. 1:762,500. Springfield: Illinois Department of Transportation. 2007 [May 26, 2012]. OCLC 244286974. (原始内容存档于2016-03-08).
Illinois Division of Highways. Illinois Official Highway Map (地图). 1:805,000. Springfield: Illinois Division of Highways. Chicago and Vicinity inset. April 1, 1955 [November 18, 2014]. OCLC 713840599. (原始内容存档于2020-12-03) –通过Illinois Digital Collections.
worldcat.org
Illinois Department of Transportation. Illinois Highway Map (地图) 2007–08. 1:762,500. Springfield: Illinois Department of Transportation. 2007 [May 26, 2012]. OCLC 244286974. (原始内容存档于2016-03-08).
Illinois Division of Highways. Illinois Official Highway Map (地图). 1:805,000. Springfield: Illinois Division of Highways. Chicago and Vicinity inset. April 1, 1955 [November 18, 2014]. OCLC 713840599. (原始内容存档于2020-12-03) –通过Illinois Digital Collections.