Ian Ballantine, Ballantine Books, Inc., New York, New York, to David Brower, Sierra Club. September 25, 1967.

Agreement between Eliot Porter and E. P. Dutton & Co., Inc. January 10, 1977.

Marshall Townsend, Director, The University of Arizona Press, Tucson, Arizona, to Eliot Porter. April 14, 1972.

Paul L. Hill, Clinical Psychologist, West Orange, New Jersey, to E. P. Dutton & Co., Inc. October 13, 1972.

Leicester H. Sherrill, The University of Arizona Foundation, Tucson, Arizona, to Mrs. Bartley Cardon. May 7, 1976.

Thomas Peter Bennett, The Academy of Natural Sciences, Philadelphia, Pennsylvania, to Eliot Porter. May 12, 1983.

John May, Editorial Director, Greenpeace Books, Sussex, England, to Eliot Porter. May 7, 1987.

Frank Aoi, Consultant, Corrales, New Mexico, to Eliot Porter. January 25, 1988.

Tim Callahan, Rochester, New York, to Eliot Porter. May 2, 1983.

T. Ole Saitoti, Ann Arbor, Michigan, to Eliot Porter. July 24, 1977.

Mel and Jan Schockner, Hollywood, California, to Eliot Porter. August 17, 1970.

Eliot Porter, Santa Fe, New Mexico, to Eliot Porter. November 5, 1952.

Gene M. Gressley, Director, The University of Wyoming, Laramie, Wyoming, to Eliot Porter. January 16, 1978.

Mrs. Clifford B. West, Director, Ossabaw Island Project, Savannah, Georgia, to Eliot Porter. November 30, 1967.

Mrs. Hans Zinsser, New York, New York, to Eliot Porter. January 7, 1973.

Clara M. Ueland, Director of Public Affairs, The Academy of Natural Sciences, Philadelphia, Pennsylvania, to Eliot Porter. January 21, 1980.

Frank J. Sulloway, II, Cambridge University, Cambridge, England, to Eliot Porter. December 28, 1968.

Letter from Charles Newton, Editor, California Institute of Technology, Pasadena, California. January 24, 1949.

Note from Weston Naef, The Metropolitan Museum of Art, New York, New York. n.d.

Martin W. Sandler, Marriott Hotels, to Eliot Porter. February 3, 1979.