Trestle work, Promontory Point, Salt Lake Valley Russell, Andrew J. photographer. View of a trestle bridge spanning a valley. Workers pose on the trestle bridge in front of a train engine that spews smoke. Rocks are piled in the foreground; mountains rise in the distance. New York : Julius Bien, 1870 Hayden, F. V. (Ferdinand Vandeveer), 1829-1887. Pictorial Work Still image 1 photographic print : image 16 x 21 cm., on sheet 31 x 25 cm. albumen, gold toned nlm:nlmuid-101456901-img 101456901 http://resource.nlm.nih.gov/101456901 IHM: C03249 English Is part of: Sun pictures of Rocky Mountain scenery; (DNLM)60741130R The National Library of Medicine believes this item to be in the public domain: https://creativecommons.org/publicdomain/mark/1.0/