Spencer B. Beebe, Vice President, Director, The Nature Conservancy International Program, Leesburg, Virginia, to Eliot Porter. July 6, 1982.

Kenneth R. Margolis, Director of Program Development, The Nature Conservancy International Program, Washington, D.C., to Eliot Porter. August 22, 1985.

Ashley Boren, Coordinator, Campagn for the Galapagos Islands, The Nature Conservancy International Program, Washington, D.C., to Eliot Porter. October 30, 1984.

Ashley Boren, Coordinator, Campagn for the Galapagos Islands, The Nature Conservancy International Program, Washington, D.C., to Eliot Porter. July 23, 1984.

Frank Woods, Academy of Motion Picture Arts and Sciences, Hollywood, California, to Karl Struss, April 27, 1929.

Disabled American Veterans of the World War, Department of Rehabilitation, Chicago, Illinois, to Karl Struss. April 11, 1933.

William E. Pate, The San Diego Museum, San Diego, California, to Karl Struss. June 1, 1924.

Phil Townsend Hanna, Touring Topics, Los Angeles, California, to Karl Struss. September 20, 1924.

Frank Woods, Academy of Motion Picture Arts and Sciences, Hollywood, California, to Karl Struss. September 12, 1930.

Ralph G. Cahn, Californial Camera Club, San Francisco, California, to Karl Struss. December 2, 1925.

V. Rayment, Rochester International Salon of Photography, Rochester, New York, to Karl Struss. December 17, 1930.

Phil Townsend Hanna, Touring Topics, Los Angeles, California, to Karl Struss. May 12, 1925.

Peter Bunnell, George Eastman House, Rochester, New York, to Karl Struss. June 17, 1963.

Kenneth R. Margolis, Director Program Development, The Nature Conservancy International Program, Washington, D.C., to Eliot Porter. September 4, 1985.

Spencer B. Beebe, Vice President, Director, The Nature Conservancy International Program, Washington, D.C., to Eliot Porter. July 11, 1983.

Stephen L. Schlensinger, Secretary, John Simon Guggenheim Memorial Foundation, New York, New York, to Eliot Porter. May 19, 1977.

Henry Allen Moe, John Simon Guggenheim Memorial Foundation, New York, New York, to Eliot Porter. April 11, 1946.

Spencer B. Beebe, Vice President, Director, The Nature Conservancy International Program, Washington, D.C., to Eliot Porter. September 8, 1983.

Jean S. Tucker, University of Missouri, St. Louis, Missouri, to Carlotta Corpron. February 29, 1980.

Henry M. Jackson, Chairman, Interior and Insular Affairs Committee, United States Senate, Washington, D.C., to Eliot Porter. April 29, 1975.