1. Ajo, Ariz Yale Public content 1934. 2011-12-12T21:21:08Z. 2022-03-29T20:38:43Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Arizona.
2. Alton, Ill.-Mo. Yale Public content 1934. 2011-12-12T21:25:37Z. 2022-03-29T20:39:13Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Illinois and Missouri.
3. Ashland, ME. Yale Public content 1934. 2011-12-12T21:27:57Z. 2022-03-29T20:39:31Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Maine.
4. Boyd Lake, ME. Yale Public content 1934. 2011-12-12T21:28:03Z. 2022-03-29T20:39:31Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Maine.
5. Cannelton, Ky.-Ind Yale Public content 1934. 2011-12-12T21:26:50Z. 2022-03-29T20:39:24Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Indiana and Kentucky.
6. Cleveland, Miss Yale Public content 1934. 2011-12-12T21:30:12Z. 2022-03-29T20:39:49Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Mississippi.
7. Colo. Silverton Yale Public content 1934. 2011-12-12T21:24:37Z. 2022-03-29T20:39:07Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Colorado.
8. Cottondale, Ala Yale Public content 1934. 2011-12-12T21:20:57Z. 2022-03-29T20:38:42Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Alabama.
9. Cynthiana, Ky. Yale Public content 1934. 2011-12-12T21:26:51Z. 2022-03-29T20:39:24Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Kentucky.
10. Denham Springs, La. Yale Public content 1934. 2011-12-12T21:27:19Z. 2022-03-29T20:39:27Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Louisiana.