This colorful double-page map shows a very early rendering of Wyoming Territory, organized in 1868. The territory's western boundary is not correctly formed; a pointed projection extends into present-day Idaho in the northwest, with Idaho occupying western Wyoming south of Jackson Hole. The map correctly delineates Montana which, along with Wyoming, was previously contained in a large Idaho territory. Dakota Territory, from which Wyoming was formed, remains undivided. There is excellent detail throughout with scores of place names, roads, watershed, topography, the Emigrant Road, forts, springs, routes of exploration and proposed railroads. The route of the Pony Express & U.S. Mail Route through Utah, Wyoming and Nebraska is delineated. The map retains the 1865 copyright date, but was likely published circa 1867.

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Condition: B+

Strong, original color and dark impression. A few insignificant spots and 2" split along centerfold at bottom.