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[Maps of the Washington Aqueduct, Md. and Washington D.C.] : to accompany supplemental report of Chief Engineer dated Feb. 22nd 1864.
Relief shown by hachures on some maps. Title devised by cataloger. Orientation differs. Accompanied by Senate document: Supplemental report of the chief engineer of the Washington Aqueduct. 50 p. : ill. ; 23 cm. Some maps include cross-sections. Available also through the Library of Congress Web site as a raster image. LC copies fold-lined and mounted on cloth backing. DCP
- Original Format: Maps
- Date: 1864
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