1. Surficial geologic map of the Watch Hill quadrangle, Rhode Island-Connecticut [cartographic material] Yale Public content 1965. 2011-12-15T21:25:18Z. 2012-03-05T17:25:18Z. Schafer, John P. (John Phillip), 1922-. U.S. Geological Survey. English. Public. Rhode Island, Washington County, Connecticut, New London County, and U.S.