Relief shown by contours and spot heights. LC Civil War maps (2nd ed.), S205 Available also through the Library of Congress Web site as a raster image. "Surveyed in 1886." Stamped in blue ink at lower left: 56. Stamped in black ink in lower right margin: G3920 svar .U5. LC copy imperfect: Mounted on cloth, laminated.
Geological Survey (u.s.) - Gannett, Henry - Thompson, Gilbert - Gannett, Samuel S. (samuel Stinson) - Pearson, F. M.