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42. Berwick, Maine-N. H. Yale Public content 1961. 2011-12-12T21:28:00Z. 2022-03-29T20:39:31Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Maine and New Hampshire.
43. Bethel, Okla Yale Public content 1961. 2011-12-12T21:35:05Z. 2022-03-29T20:40:26Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Oklahoma.
44. Betty Reservoir, Wyo Yale Public content 1961. 2011-12-12T21:41:06Z. 2022-03-29T20:41:05Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Wyoming.
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46. Big Delta (D-5) quadrangle, Alaska : 1:63 360 series (topographic). Yale Public content 1961. 2012-09-28T15:38:24Z. 2022-03-29T20:37:46Z. Geological Survey (U.S.). Interior-Geological Survey. English. cartographic image. Public. Alaska.
47. Bill, Wyo Yale Public content 1961. 2011-12-12T21:41:06Z. 2022-03-29T20:41:05Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Wyoming.
48. Birmingham North, Ala Yale Public content 1961. 2011-06-03T16:46:41Z. 2022-03-29T20:41:19Z. Geological Survey (U.S.). United States, Dept. of the Interior, Geological Survey. English. Public. Alabama.
49. Black Canyon, Ariz.-Nev Yale Public content 1961. 2011-12-12T21:21:13Z. 2022-03-29T20:38:44Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Arizona and Nevada.
50. Black Mountain, Colo Yale Public content 1961. 2011-12-12T21:24:23Z. 2022-03-29T20:39:05Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Colorado.