Река Колорадо. Гранд-Каньон, Феетс-Крик. (Обратите внимание - оказывается, что стеклянный негатив может иметь - NARA - 518020

John Karl Hillers was a German-American photographer and explorer, best known for his photographs of Native American tribes in the American West in the late 19th century. He worked as a photographer for the United States Geological Survey, documenting various expeditions in the western United States. Hillers is also credited with discovering and photographing Rainbow Bridge National Monument in Utah.