[Washington, DC]: [A.O.P. Nicholson, Printer], . Engraving [15 cm x 22.5 cm] on a sheet [30 cm x 38 cm] that shows light overall foxing. Item #1336
This image taken from Beckwith's (after Gunnison's death) Central Pacific survey of the Pacific Railroad Survey. Engraved by C. Schumann.