Spencer B. Beebe, The Nature Conservancy, Portland, Oregon, to Eliot Porter. December 29, 1977.

Memorandum to the New Mexico Chapter Board of Trustees from Marlis A. Hadley. December 21, 1983.

Memorandum to the New Mexico Chapter Board of Trustees from John C. Egbert. June 24, 1983.

Eliot Porter, to Olivia Gilliam, Orion Nature Quarterly. September 9, 1985.

Beaumont Newhall, Albuquerque, New Mexico, to Eliot Porter. July 8, 1974.

Beaumont Newhall, Rochester, New York, to Eliot Porter. December 23, 1954.

Anne Dirkes Kobor, National Geographic Society, Washington, D.C., to Eliot Porter. April 10, 1963.

Charlotte White, Santa Fe, New Mexico, to Eliot Porter. May 19, 1972.

J. R. Hildebrand, National Geographic Magazine, Washington, D.C., to Eliot Porter. August 15, 1940.

J. R. Hildebrand, National Geographic Magazine, Washington, D.C., to Eliot Porter. March 3, 1941.

Patricia Doyle Nicholson, National Geographic Society, Washington, D.C., to Eliot Porter. June 25, 1962.

J. R. Hildebrand, National Geographic Magazine, Washington, D.C., to Eliot Porter. September 17, 1940.

Barbara Bertoli, Art Director, Avon Books, to Eliot Porter. April 25, 1975.

Dave McAlpin, The University Club, New York, New York, to Eliot Porter. December 9, 1960.

Nancy Newhall, Rochester, New York, to Eliot Porter. December 17, 1949.

Crawford H. Greenewalt, Du Pont Building, Wilmington, Delaware, to Eliot Porter. May 22, 1981.

[Jack?], The University of Arizona Press, Tucson, Arizona, to Eliot Porter. May 1, 1964.

Donald Bricht, Haystack Mountain School of Crafts, Deer Isle, Maine, to Eliot Porter. July 1.

Elliot Adler, Valley Stream, New York, to Eliot Porter. October 8, 1968.

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