21. Canton, Penn Yale Public content 1944. 2011-12-12T21:36:05Z. 2022-03-29T20:40:32Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Pennsylvania.
22. Cape Foulweather Yale Public content 1944. 2011-12-12T21:35:25Z. 2022-03-29T20:40:28Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Oregon.
23. Cassville, Mo. Yale Public content 1944. 2011-12-12T21:30:34Z. 2022-03-29T20:39:51Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Missouri.
24. Chesterfield, Mass Yale Public content 1944. 2011-12-12T21:28:57Z. 2022-03-29T20:39:40Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Massachusetts.
25. Chiricahua Peak, Ariz Yale Public content 1944. 2011-12-12T21:21:18Z. 2022-03-29T20:38:44Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Arizona.
26. Chopin, La. Yale Public content 1944. 2011-12-12T21:27:17Z. 2022-03-29T20:39:27Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Louisiana.
27. Clayton, Wash Yale Public content 1944. 2011-12-12T21:39:19Z. 2022-03-29T20:40:53Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Washington.
28. Clayton, Wash Yale Public content 1944. 2011-12-12T21:39:19Z. 2022-03-29T20:40:53Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Washington.
29. Clear Lake, Wash Yale Public content 1944. 2011-12-12T21:39:20Z. 2022-03-29T20:40:53Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Washington.
30. Coalinga, Calif Yale Public content 1944. 2011-12-12T21:22:41Z. 2022-03-29T20:38:52Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. California.