31. Brownville, Ala Yale Public content 1968. 2011-06-03T16:46:28Z. 2022-03-29T20:41:18Z. Geological Survey (U.S.). United States, Dept. of the Interior, Geological Survey. English. Public. Alabama.
32. Caloplaca Hills [cartographic material] Yale Public content 1968. 2012-05-08T19:41:55Z. 2012-05-16T15:47:55Z. Geological Survey (U.S.). For sale by the U.S. Geological Survey. English. Public. Antarctica.
33. Carbon Hill, Ala Yale Public content 1968. 2011-06-03T16:44:57Z. 2022-03-29T20:41:17Z. Geological Survey (U.S.). United States, Dept. of the Interior, Geological Survey. English. Public. Alabama.
34. Carrollton, Ala Yale Public content 1968. 2011-06-03T16:45:02Z. 2022-03-29T20:41:17Z. Geological Survey (U.S.). United States, Dept. of the Interior, Geological Survey. English. Public. Alabama.
35. Chickasaw, Ala Yale Public content 1968. 2011-06-03T16:43:52Z. 2022-03-29T20:41:16Z. Geological Survey (U.S.). United States, Dept. of the Interior, Geological Survey. English. Public. Alabama.
36. Chignik (A-8) quadrangle, Alaska : 1:63 360 series (topographic). Yale Public content 1968. 2012-09-28T14:58:44Z. 2022-03-29T20:37:06Z. Geological Survey (U.S.). Interior-Geological Survey. English. cartographic image. Public. Alaska.
37. Chignik (D-1) quadrangle, Alaska : 1:63 360 series (topographic). Yale Public content 1968. 2012-09-28T14:59:15Z. 2022-03-29T20:37:06Z. Geological Survey (U.S.). Interior-Geological Survey. English. cartographic image. Public. Alaska.
38. Chignik (D-2) quadrangle, Alaska : 1:63 360 series (topographic). Yale Public content 1968. 2012-09-28T14:59:14Z. 2022-03-29T20:37:06Z. Geological Survey (U.S.). Interior-Geological Survey. English. cartographic image. Public. Alaska.
39. Clan Alpine Ranch, Nev Yale Public content 1968. 2011-12-12T21:31:44Z. 2022-03-29T20:40:02Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Nevada.
40. Clarno, Oreg Yale Public content 1968. 2011-12-12T21:35:27Z. 2022-03-29T20:40:28Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Oregon.