MapPacific Ocean. Shows the Atrato and San Juan rivers proposed interoceanic canal route. Relief shown by hachures. Pen-and-ink on tracing linen. Anonymous manuscript map oriented with north to the left. Panama: An Exhibition in Five Parts, Washington, Library of Congress, 1978, page 3. On verso: No. 34 Atratic Route, for Canal. Available also through the Library of Congress Web site as a raster image.
- Date: 1850