Keywords: HenryWoodElliotUSGS-WHJackson1870.jpg en Henry Wood Elliot circa 1870 a member of the 1871 Hayden U S Geological Survey to Yellowstone U S Geological Survey Photo - 1870 Creator William Henry Jackson ca 1870 File Camp study H W Elliott - NARA - 517184 tif PD-USGov People associated with Yellowstone National Park William Henry Jackson-Hayden Surveys Henry W Elliott |