Members of the 1870 U.S. government survey of the Yellowstone River and Rocky Mountains led by Ferdinand Hayden (also known as the "Hayden Geological Survey"), 1870, Smithsonian Institution Archives, Members of the 1870 U.S. government survey of the Yellowstone River and Rocky Mountains led by Ferdinand Hayden (also known as the "Hayden Geological Survey"). Standing left to right: John "Potato John" Raymond and "Val," cooks; Sanford Robinson Gifford (1823-1880), landscape painter; Henry Wood Elliott (1846-1930), artist; James Stevenson (1840-1888), assistant; Henry D. Schmidt, naturalist; E. Campbell Carrington, zoologist; L. A. Bartlett, general assistant; William Henry Jackson (1843-1942), photographer. Sitting left to right: C. S. Turnbull, secretary; J. H. Beaman, meteorologist; Ferdinand Vandeveer Hayden (1829-1887), geologist in charge; Cyrus Thomas (1825-1910), agriculturist; Raphael, hunter; A. L. Ford, mineralogist. The Library of Congress copy of this photograph is captioned "A noon meal in Ferdinand V. Hayden's camp of the U.S. Geological and Geophysical Survey, Red Buttes, Wyoming Territory, August 24, 1870.".