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Pre-Gadsden Purchase Map of North America

Detailed map of North America, showing an early set of territorial configurations.

Massive Utah and New Mexico, pre-dating Nevada and Arizona.  Kanzas extends to the Rocky Mountains, pre-dating Colorado.  Massive Nebraska Territory includes Montana and Wyoming and part of the Dakotas.

Washington & Oregon extend to the Rocky Mountains.

Adam & Charles Black were among the leading publishers of atlases and travel books in the 19th Century England.