National Geographic September 1921

Our Greatest National Monument: The National Geographic Society Completes Its Explorations in the Valley of Ten Thousand Smokes
Research from six expeditions to Alaska’s Katmai volcano suggests that the massive eruption of 1912 was only the final stage of a series of geological disturbances in this unusual region.
Life Among the People of Eastern Tibet
A longtime medical missionary in Tibet sketches life beyond the larger cities of this remote mountain land.