Pacific Ocean. Historic map, Library of Congress

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.