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Potomac Aqueduct, hydrographic survey of the Potomac River near Georgetown : shewing the position of the Aqueduct, its connection with the Ch. & Ohio Canal ...
"Survey made in the fall of 1832." Relief shown by hachures. Depths shown by contours and soundings. From the papers of the Virginia-District of Columbia Boundary Commission. Available also through the Library ...
Contributor: Turnbull, Wm. Site/Collection: Geography and Map Division - Cities and Towns - American Memory - Main Catalog Original Format: Map Date: 1832 View catalog record