This detailed map of North America shows the United States' claims into present-day Canada reflecting the Oregon boundary dispute. Texas is shown as a part of Mexico, and Mexico's northern border is drawn according to the Treaty of 1819. A number of western rivers include dashed lines showing supposed courses, including one stretching across the Great Basin to the San Francisco Bay. Russia is in control of Alaska. Surrounded by a keyboard-style border with four distance scales in the bottom margin.

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Condition: B+

A crisp impression with some light scattered foxing that is more prominent in the blank margins. A short centerfold separation confined to the bottom blank margin has been closed on verso with archival tape.