Portion of the Main Mountain Passage. Of the Upper Sacramento or Pitt River. July 20th at 1 p.m. 25 Miles South of Mt. Shasta.[Vintage Pacific Railroad Survey Lithograph] de 41st PARALLEL) Schumann, C. from F.W. Egloffstein (illus) - 1855.

U.S. Government. House of Representatives.. 1855.. Engraving, 6 1/2 x 9 1/4 inches on sheet 8 1/2 x 11 1/2 inches. Some faint foxing (mainly in outer margins), some 1/8 inch holes along lower edge (affecting small line of text), otherwise very good condition. Attractive landscape with the peak of Mt. Shasta in the distance, documenting the Beckwith Exploration of the 41st Parallel for the U.S. Government "Reports of Explorations and Surveys, to Ascertain the Most Practicable and Economical Route For a Railroad from the Mississippi River to the Pacific Ocean." .