31. Cortez, Nev Yale Public content 1944. 2011-12-12T21:31:45Z. 2022-03-29T20:40:02Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Nevada.
32. Crystal, N. Dak Yale Public content 1944. 2011-12-12T21:34:24Z. 2022-03-29T20:40:22Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. North Dakota.
33. Cutoff Mtn., Mont.-Wyo Yale Public content 1944. 2011-12-12T21:31:10Z. 2022-03-29T20:39:55Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Montana and Wyoming.
34. Cuyamaca Peak, Calif Yale Public content 1944. 2011-12-12T21:22:47Z. 2022-03-29T20:38:53Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. California.
35. Deer Isle, ME. Yale Public content 1944. 2011-12-12T21:28:09Z. 2022-03-29T20:39:32Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Maine.
36. Dulac, La. Yale Public content 1944. 2011-12-12T21:27:20Z. 2022-03-29T20:39:27Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Louisiana.
37. Dunlap, Calif Yale Public content 1944. 2011-12-12T21:22:50Z. 2022-03-29T20:38:53Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. California.
38. Dyas, Ala.-Fla Yale Public content 1944. 2011-12-12T21:20:58Z. 2022-03-29T20:38:42Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Alabama and Florida.
39. Edmonds, Wash Yale Public content 1944. 2011-12-12T21:39:23Z. 2022-03-29T20:40:53Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Washington.
40. Elbert, Colo Yale Public content 1944. 2011-12-12T21:24:26Z. 2022-03-29T20:39:06Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Colorado.