Keywords: stereoscopic stereophotography stereophotographs historical usgs history geology mapping black and white blackandwhite bnw stereograph blackandwhite monochrome outdoor black and white Yellowstone National Park, Wyoming. Camp scene. James Stevenson, Adams, Frank Bradley, Dr. Curtis. These men were together only on the 1872 expedition. U.S. Geological and Geographical Survey of the Territories (Hayden Survey). Stereoscopic view. Yellowstone National Park, Wyoming. Camp scene. James Stevenson, Adams, Frank Bradley, Dr. Curtis. These men were together only on the 1872 expedition. U.S. Geological and Geographical Survey of the Territories (Hayden Survey). Stereoscopic view. |