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. The map is still bound into the 50-page report with paper wrappers.

References: Wheat (TMW) #1022.

Condition: B

Issued folding with faint toning and several splits at fold intersections. There is a chip in the right blank margin that just passes the neatline and a small fold separation at bottom that has been repaired on verso with archival tape. Report is very good with light toning and chips along the fore-edge of a few pages.