1. Geologic and crustal cross section of the United States along the 37th parallel a contribution to the Upper Mantle project / [cartographic material] Yale Public content 1965. 2012-09-28T18:54:53Z. 2021-10-01T21:34:13Z. Hamilton, Warren Bell, 1925-. Dept. of the Interior, U.S. Geological Survey. English. Public. United States., Sunbelt States., United States, and Sunbelt States.