Robert M. Peck, Fellow of the Academy, The Academy of Natural Sciences, Philadelphia, Pennsylvania, to Eliot Porter. October 14, 1983.

Sheila Turner, Editor, Images of Man, Scholastic Magazines Inc., New York, New York, to Eliot Porter. November 3, 1972.

N. D. Deniston, Assistant Project Manager, HERO/Palmer Research System, Anaheim, California, to Eliot Porter. July 8, 1976.

Summer List and pages 7 to 332. n.d.

Robert H. Rutford, Head, Office of Polar Programs, Washington, D.C., to Eliot Porter. October 9, 1975.

Elliot S. Barker, Wildlife and Conservation Association, Inc., Santa Fe, New Mexico, to Eliot Porter. April 12, 1962.

Eliot Porter, Director, Santa Fe, New Mexico, to Hugh Nash, Editor, Sierra Club Bulletin. January 26, 1969.

Journal I List and pages 83 to 463. n.d.

Summer, page 317 and 63. n.d.

"The Physical Geology of the Grand Canon District" by Clarence E. Dutton. 1882.

Robert L. Breeden, Vice President, National Geographic Society, Washington, D.C., to Eliot Porter. May 21, 1985.

Hilary Fraser, Development, Natural Resources Defense Council, New York, New York, to Eliot Porter. October 6, 1987.

Dana Asbury, Editor, The University of New Mexico, Albuquerque, New Mexico, to Eliot Porter. January 23, 1987.

Eliot Porter, Santa Fe, New Mexico, to Edgar Wayburn, President, Sierra Club. January 27, 1969.

Loan Receipt to Eliot Porter from Dorothy H. Dudley, Registrar, The Museum of Modern Art. February, 1960.

Receipt of Delivery to Eliot Porter from Dorothy H. Dudley, Registrar, The Museum of Modern Art. December 15, 1959.

Tim [Timothy Seldes], Russell & Volkening, Inc., New York, New York, to Eliot Porter. June 28, 1978.

Timothy Seldes, Russell & Volkening, Inc., New York, New York, to Eliot Porter. October 24, 1972.

Robert F. Erickson, Manager-Special Projects, Meisel Photochrome Corporation, Dallas, Texas, to Eliot Porter. June 1, 1976.

Alfred H. Barr, Jr., Director, The Museum of Modern Art, New York, New York, to Eliot Porter. February 4, 1943.