Keywords: AmphitheaterMountainYNPca1890.jpg en Yellowstone National Park Wyoming Republic Pass looking west toward Amphitheater Mountain Circa 1890 Plate 29 U S Geological Survey Monograph 32 part 2 Downloaded from USGS http //libraryphoto cr usgs gov/htmllib/batch79/batch79j/batch79z/batch79/ijp00346 jpg J P Iddings ca 1890 Mountains of Wyoming Mountains of Yellowstone PD-USGov |