Coyotero Apache Scouts, at Apache Lake, Sierra Blanca Mountains, Arizona. Two members of the Expedition in the back-ground, No. 31 from the series "Geographical Explorations and Surveys West of the 100th Meridian"
Marble Cañon, one of the gorges of the Colorado here, 1.200 feet deep. The steep cliff is gray limestone and the slope below a brilliant red sandstone, No. 13 from the series "Geographical Explorations and Surveys West of the 100th Meridian"
