Arthur Rushmore, The Golden Hind Press, Madison, New Jersey, to John V. N. Dorr. May 31, 1954.

Eliot Porter, Winnetka, Illinois, to Henry Allen Moe, John Simon Guggenheim Memorial Foundation. January 6, 1946.

Marilyn H. Cook, Certified Public Accountant, Morrison, Colorado, to Eliot Porter. September 1, 1971.

Gerður Hjörleifsdóttir, Iceland Handcraft's Center, Reykjavík, Iceland, to Mrs. Eliot Porter. September 22, 1972.

Molly Teldes to Mr. Rathburn. August 6, 1975.

David A. De Turk, Dialog Records, Biddeford, Maine, to Eliot Porter. March 12, 1971.

Virgil Kauffman, President, The Explorers Club, New York, New York, to Eliot Porter. December 2, 1977.

Lewis Cotlow, The Explorers Club, New York, New York, to Eliot Porter. October 21, 1977.

Crawford H. Greenewalt, Du Pont Building, Wilmington, Delaware, to Eliot Porter. February 23, 1973.

Anne Dirkes Kobor, National Geographic Society, Washington, D.C., to Eliot Porter. May 15, 1963.

John D. Margolis, Associate Professor, Northwestern University , Evanston, Illinois, to Eliot Porter. February 27, 1974.

Dede Armentrout, Regional Representative, National Audubon Society, Brownwood, Texas, to Eliot Porter. December 20, 1979.

John D. Margolis, Associate Professor, Northwestern University , Evanston, Illinois, to Eliot Porter. May 6, 1974.

Dave McAlpin, The University Club, New York, New York, to Aline and Eliot. October 11, 1976.

Robert W. Lanni, National Geographic Society, Washington, D.C., to Eliot Porter. August 3, 1964.

Robert B. Anderson, Chairman, The New Mexico Nature Conservancy, Roswell, New Mexico, to Eliot Porter. n.d.

Edmund F. Ball, Merchants National Bank Building, Muncie, Indiana, to Eliot Porter. March 15, 1985.

Marlis A. Hadley, The Nature Conservancy, Albuquerque, New Mexico, to Eliot Porter. July 31, 1984.

Ann Guilfoyle, Senior Editor, Audubon, New York, New York, to Eliot Porter. April 23, 1975.

Guy Neff, Book Editor, Meredith Publishing Company, Des Moines, Iowa, to Laura Gilpin. January 21, 1959.