COMPILED FROM SURVEYS MADE UNDER THE ORDER OF W.H. EMORY. Major 1st Cavalry, U.S. Commissioner. And from the Maps of the Pacific Rail Road, General Land Office, and the Coast Survey. Projected and drawn under the supervision of IAN. MICHLER. Top. Eng. BY THOMAS JEKYLL. C. E. 1857-8.
Map of the United States and their Territories Between the Mississippi and the Pacific Ocean and part of Mexico. 1857. From Rice University http://hdl.handle.net/1911/35371.