1937. 2012-01-04T18:27:38Z. 2015-04-21T22:02:33Z. United States. Bureau of Public Roads. Bureau of Public Roads. English. Public. Illinois.
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1927. 2012-01-04T18:22:07Z. 2015-04-21T22:02:33Z. United States. Bureau of Public Roads. U.S. Geological Survey. English. Public. Illinois.
1933. 2012-01-04T18:25:48Z. 2015-04-21T22:02:33Z. United States. Bureau of Public Roads. Bureau of Public Roads. English. Public. Illinois.