Large and extremely detailed chart by J.H. Clark, U.S. Commissioner, that was drawn by J.E. Weyss, circa 1860. The map features the survey lines between Texas and New Mexico with good topographical detail. Information includes forts, Raton Pass, the Santa Fe, and Albuquerque trails, numerous explorers' routes, Indian trails, and more. The map is an interesting historical curiosity because it was not published when the survey was finished due to the outbreak of the Civil War. In 1902 the map was belatedly included in a Geological Survey Bulletin by Marcus Baker. Printed by the Norris Peters Co., Photo-Litho.

References: Wheat (TMW) #1022.

Condition: B+

Issued folding with a few minor spots, a hint of toning along the folds, and some short fold separations, some of which are closed with archival tape on verso. There is a binding trim and associated tear in the bottom right blank margin.