1938. 2012-01-06T16:01:04Z. 2015-10-27T22:08:39Z. United States. Bureau of Public Roads. The Bureau. English. Public. Iowa.
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1943. 2012-01-06T16:39:56Z. 2015-04-21T22:02:45Z. United States. Public Roads Administration. The Administration. English. Public. Maine.
1945. 2012-01-06T16:40:26Z. 2015-04-21T22:02:45Z. United States. Public Roads Administration. The Administration. English. Public. Maine.
1940. 2012-01-06T16:39:19Z. 2021-10-01T21:33:51Z. United States. Bureau of Public Roads. The Bureau. English. Public. Maine.
1937. 2012-01-06T16:51:17Z. 2015-04-21T22:02:45Z. United States. Bureau of Public Roads. The Survey. English. Public. Maryland.
1941. 2012-01-06T16:51:51Z. 2015-04-21T22:02:45Z. United States. Public Roads Administration. The Administration. English. Public. Maryland.
1937. 2012-01-06T17:00:08Z. 2015-04-21T22:02:45Z. United States. Bureau of Public Roads. The Survey. English. Public. Massachusetts.
1937. 2012-01-06T17:45:48Z. 2021-09-24T21:33:50Z. United States. Bureau of Public Roads. The Survey. English. Public. Michigan.
1944. 2012-01-06T17:52:27Z. 2015-04-21T22:02:45Z. United States. Public Roads Administration. The Administration. English. Public. Minnesota.
1940. 2012-01-06T17:51:54Z. 2015-04-21T22:02:45Z. United States. Public Roads Administration. The Survey. English. Public. Minnesota.