River basins of the United States--The Delaware
Delaware River Basin
Shows watershed outline, tributaries, and principal towns. Panel title. "This publication is one of a series of general interest publications prepared by the U.S. Geological Survey to provide information about ... the environment." Includes text, location map (inset), and ill. Text, ill., and department insigne on verso. "1991-279-928." Available also through the Library of Congress Web site as a raster image.