Scale ca. 1:6,000,000. Manuscript, pencil and pen-and-ink. "Rather more than 1/4 of the whole map." Available also through the Library of Congress Web site as a raster image. Includes text. Index to points of interest on verso. Accompanied by manuscript text.  p. Vault AACR2
Thoreau, Henry David - Champlain, Samuel De
Shows coast of North America from western Nova Scotia to Cape Cod. Relief shown pictorially. Gift; Henry Harrisse; 1910. Pen-and-ink with green wash. Vellum chart collection, no. 15. LC Nautical charts on vellum, 15 Available also through the Library of Congress Web site as a raster image. Includes table of longitude calculations in upper right corner, title cartouche, and decorative scale not specifying measurement. ...