Geological Survey (U.S.). United States. National Aeronautics and Space Administration. cartographic Remote-sensing maps. lcgft Photomaps. lcgft Washington, 1973. eng Photo mosaic. Does not show relief. "National Aeronautics and Space Administration image." "NASA (ERTS-1)." "This 'false-color' composite imagery of the National Capital area was produced by the Department of the Interior, U.S. Geological Survey, from multispectral imagery taken by the NASA Earth Resources Technology Satellite (ERTS-1) on October 11, 1972 ..." Scale 1:250,000. Washington Region--Maps. Chesapeake Bay Region (Md. and Va.)--Maps. United States District of Columbia Washington Region. United States Maryland Chesapeake Bay Region. United States Virginia Chesapeake Bay Region. Available also through the Library of Congress Web site as a raster image. http://hdl.loc.gov/loc.gmd/g3851a.ct004559