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Historical geology sheet, Maryland--District of Columbia--Virginia, Wa...
Relief shown by contours. Geology "Surveyed in 1893-1899." Topography "Surveyed in 1895-86 and 95-97." Includes notes and "Sections" diagram. LC copy halved and mounted on cloth backing. Available also through ... More
Map of Puerto Rico showing distribution of crop lands.
From U.S.G.S. Water Supply Paper No. 32, pl. XIII. 1899. Available also through the Library of Congress web site as a raster image.