1. Laurel, Mary Yale Public content 1954. 2011-12-12T21:28:47Z. 2022-03-29T20:39:36Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Maryland.
2. Morgantown quadrangle, Maryland--Virginia 7.5 minute series (topographic) / [cartographic material] Yale Public content 1954. 2012-07-05T19:16:06Z. 2012-07-11T15:21:52Z. Geological Survey (U.S.). The Survey. English. Public. Maryland, Virginia, Morgantown (Md.), and Morgantown (Va.).
3. Relay, Mary Yale Public content 1954. 2011-12-12T21:28:50Z. 2022-03-29T20:39:36Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Maryland.