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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 on the north bank, and with the ...
"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.
- Original Format: Maps
- Date: 1832