261. Marblemount, Wash Yale Public content 1955. 2011-12-12T21:39:33Z. 2022-03-29T20:40:54Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Washington.
262. Marion Peak, Calif Yale Public content 1955. 2011-12-12T21:23:25Z. 2022-03-29T20:38:57Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. California.
263. Matthews Lake, District of Mackenzie, Northwest Territories [cartographic material] Yale Public content 1955. 2012-10-31T15:48:04Z. 2013-03-18T22:25:47Z. Folinsbee, R. E. (Robert E.), 1917-. Canada, Dept. of Mines and Technical Surveys, Geological Survey of Canada. English. Public. Northwest Territories and Matthews Lake Region.
264. McGehee Yale Public content 1955. 2011-12-12T21:22:11Z. 2022-03-29T20:38:49Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Arkansas.
265. McHenry, Miss Yale Public content 1955. 2011-12-12T21:30:18Z. 2022-03-29T20:39:49Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Mississippi.
266. Mechanicsburg, Ill Yale Public content 1955. 2011-12-12T21:26:07Z. 2022-03-29T20:39:16Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Illinois.
267. Memphis, Tenn-Ark Yale Public content 1955. 2011-12-12T21:37:02Z. 2022-03-29T20:40:41Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Arkansas and Tennessee.
268. Memphremagog, Vt. Yale Public content 1955. 2011-12-12T21:38:36Z. 2022-03-29T20:40:49Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Vermont.
269. Merced Peak, Calif Yale Public content 1955. 2011-12-12T21:23:28Z. 2022-03-29T20:38:57Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. California.
270. Mercersburg, Penn Yale Public content 1955. 2011-12-12T21:36:23Z. 2022-03-29T20:40:34Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Pennsylvania.