U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station,

Goodtimes Home Video,

Cathco Pub. Co.,

Imagesmith,

Beautiful America Pub. Co.,

National Park Service, Pacific Northwest Region,

Northwest Illustrated,

Mount St. Helens Geological Area, Gifford Pinchot National Forest, U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region,

U.S. Dept. of the Interior, Geological Survey ; For sale by the Supt. of Docs., U.S. G.P.O.,

U.S. Dept. of the Interior, Geological Survey ; For sale by the Supt. of Docs, U.S. G.P.O.,

University of Washington Press,

Childrens Press,