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A map of Potomack and James rivers in North America shewing their several communications with the navigable waters of the new province on the river Ohio.
Scale ca. 1:950,000. Manuscript, pen-and-ink and watercolor. Has watermark. Relief shown pictorially. Available also through the Library of Congress Web site as a raster image. col. map 60 x 81 cm.
- Contributor: Ballendine, John
- Original Format: Maps
- Date: 1772