Clifford J. Rudden, Sierra Club, San Francisco, California, to Eliot Porter. August 24, 1971.

Eliot Porter, Santa Fe, New Mexico, to Edgar Wayburn, President, Sierra Club. May 1, 1968.

C. Emery Cuddy, Jr., Santa Fe, New Mexico, to Eliot Porter. August 20, 1973.

Ian Ballantine, Ballantine Books, Inc., New York, New York, to Eliot Porter. October 15, 1969.

Eliot Porter, Santa Fe, New Mexico, to Clifford Rudden, Controller, Sierra Club. August 8, 1968.

W. G. Berl, Editor, American Assocation for the Advancement of Science, Washington, D.C., to Eliot Porter. January 22, 1970.

Charlotte E. Mauk, Secretary, Sierra Club, San Francisco, California, to Eliot Porter. May 1, 1963.

David Bowes, St. Louis Post-Dispatch, St. Louis, Missouri, to Eliot Porter. May 25, 1965.

David P. Becker, Brunswick, Maine, to Eliot Porter. February 25, 1970.

Kenneth Froehly to Eliot Porter. August 16, 1971.

Marshall Townsend, Director, The University of Arizona Press, Tucson, Arizona, to Eliot Porter. April 27, 1973.

Karl Struss, Pine Hills, California, to Mother. November 4, 1920.

Menu from Mission Inn, Riverside, California. January 1, 1921.

Karl Struss, Grand Canyon, Arizona, to Mother. February 21, 1919.

Karl Struss, Kansas City, Missouri, to Mother. February 18, 1919.

Karl Struss, Hollywood, California, to Mother. April 19-20, [1920].

Karl Struss, Los Angeles, California, to Mother. March 15, 1919.

Karl Struss, Santa Cruz Island, California, to Mother. June 24, 1919.

Karl Struss, Kansas City, Missouri, to Hilda. February 17, 1918.

Lilian, New York, New York, to Karl and Etchie. May 19, 1959.