Keywords: stereoscopic stereophotography stereophotographs historical usgs history geology mapping black and white blackandwhite bnw stereograph blackandwhite monochrome outdoor black and white Green River. Split Mountain Canyon. Not far from entrance to canyons. Dinosaur National Monument. Uintah County, Utah. July 10, 1871. (Stereoscopic view) Green River. Split Mountain Canyon. Not far from entrance to canyons. Dinosaur National Monument. Uintah County, Utah. July 10, 1871. (Stereoscopic view) |