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  • Map
    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 of Congress Web site as a raster image. Rubber-stamped and annotated in ink on recto and verso: District of Columbia-Virginia Boundary Commission ... State of Virginia Exhibit No. 63 ... Date: January...
    • Contributor: Turnbull, Wm. (William) - Ewing, Maskell C. - Virginia-District of Columbia Boundary Commission
    • Date: 1832
  • Map
    Washington and Georgetown harbors, District of Columbia Nautical chart. Also covers central Washington. Relief shown by contours and hachures. Depths shown by contours and soundings. Printed note slip titled "Time ball" affixed at lower right. Includes notes, tide table, and survey insigne. In left upper margin: No. 391a price 40 cents. LC copy soiled, laminated, and mounted on cloth backing. Available also through the Library of Congress Web site as a...
    • Contributor: U.S. Coast and Geodetic Survey - Hilgard, J. E. (Julius Erasmus) - Cutts, R. D. (Richard Dominicus) - Lindenkohl, A. - Lindenkohl, H. (Henry)
    • Date: 1882