Spencer B. Beebe, Vice President, Director, The Nature Conservancy International Program, Portland, Oregon, to Eliot Porter. April 12, 1985.

Jon Beckmann, Editor in Chief, Sierra Club Books, San Francisco, California, to Eliot Porter. February 18, 1975.

Anne D. Kobor, Illustrations Editor, National Geographic Society, Washington, D.C., to Eliot Porter. September 16, 1975.

R. T. Bond, Dodd, Mead, & Company Incorporated, New York, New York, to Eliot Porter. August 14, 1953.

Joseph J. Amiel, Joshua Tree Producations, Inc., New York, New York, to Eliot Porter. September 2, 1971.

Spencer B. Beebe, The Nature Conservancy International Program, to Charles J. Hedlund, Chairman, International Advisory Committee. October 10, 1984.

Kenneth D. Morrison, Editor, Aubudon Magazine, New York, New York, to Eliot Porter. March 22, 1954.

Michael Brown, Book Promotion Manager, Sierra Club, San Francisco, California, to Eliot Porter. July 31, 1963.

John D. Rogers, New Mexico State Senate, Santa Fe, New Mexico, to Eliot Porter. February 26, 1972.

Jack Crawford, Product Specialist, Eastman Kodak Company, Rochester, New York, to Eliot Porter. March 23, 1965.

Spencer B. Beebe, Vice President, Director, The Nature Conservancy International Program, Leesburg, Virginia, to Eliot Porter. March 15, 1983.

Letter from Linda Carter, Coordinator of Student Publications, Technical Education Center, Charleston, South Carolina. May 31, 1974.

G. F. Bush, G. F. Bush Associates, Princeton, New Jersey, to Eliot Porter. March 15, 1968.

Richard M. Ketchum, Editor, Blair & Ketchum's Country Journal, Manchester Center, Vermont, to Eliot Porter. August 24, 1977.

Grayce A. Finger, Exhibit Manager, American Assocation for the Advancement of Science, Washington, D.C., to Eliot Porter. September 8, 1972.

George W. Corner, Executive Director, American Philosophical Society, Philadelphia, Pennsylvania, to Eliot Porter. March 2, 1970.

Marshall Townsend, Director, The University of Arizona Press, Tucson, Arizona, to Eliot Porter, Nature Photographer. October 23, 1969.

James G. Deane, Editor, The Living Wilderness, The Wilderness Society, Washington, D.C., to Eliot Porter. May 23, 1979.

Richard M. Ketchum, Editor, Blair & Ketchum's Country Journal, Manchester Center, Vermont, to Eliot Porter. November 19, 1979.

Henry F. Weisenburger, Program Chairman, Boston Camera Club, Boston, Massachusetts, to Eliot Porter. March 30, 1969.