W. E. Schmidt, Manager, Miseastern Service, Singer, Rochester, New York, to Eliot Porter. May 25, 1971.

Heldagard Beckette and 1969 Yearbook Staff, Del Valle High School, Walnut Creek, California, to Eliot Porter. November, 1968.

Richard DeAngelis, U.S. Department of Commerce, National Oceanic and Atmospheric Administration, Rockville, Maryland, to Eliot Porter. October 11, 1972.

T. T. Holden, Director, Technical Service Department, Graflex, Inc., Rochester, New York, to Eliot Porter. November 25, 1952.

John Geryak, Art Director, Kallir, Philips, Ross, Inc., New York, New York, to Eliot Porter. June 25, 1969.

David E. Munich, Case Western Reserve University, Cleveland, Ohio, to Eliot Porter. March 25, 1976.

Bryan Holme, American Studio Books, New York, New York, to Eliot Porter. March 19, 1946.

Thomas Baird, Associate Director, Dumbarton Oaks, Trustees for Harvard University, Washington, D.C., to Eliot Porter. August 18, 1967.

Marvin S. Sadik, Director, Bowdoin College Museum of Art, Brunswick, Maine, to Eliot Porter. November 3, 1965.

Clyde Fisher, Curator, The American Museum of Natural Art, New York, New York, to Laura Gilpin. February 25, 1933.

Mrs. C. A. Schroeder, Secretary, The Central City Opera House Association, Denver, Colorado, to Laura Gilpin. July 25, 1932.

Thomas R. Johnson, Secretary, Carnegie Institution of Washington, Washington, D. C., to Laura Gilpin. January 28, 1933.

Chauncey J. Hamlin, President, Buffalo Museum of Science, Buffalo, New York, to Laura Gilpin. November 19, 1936.

Herbert Putnam, Washington D. C., to Laura Gilpin. May 24, 1934.

Fred Harvey, Albuquerque, New Mexico, to Gilpin Publishing Co. August 31, 1937.

Frank B. Gill, Chairman of Ornithology, Visual Resources for Ornithology, Philadelphia, Pennsylvania, to Eliot Porter. June 15, 1987.

Elizabeth Landry, Picture Research Editor, Reader's Digest, London, England, to Eliot Porter. February 21, 1969.

Robert Saudek, President, The Museum of Broadcasting, New York, New York, to Eliot Porter. May 4, 1977.

George Williams Eggers, Director, Denver Art Museum, New York, New York, to Laura Gilpin. April 23, 1926.

Judy Stone, Publicist, Holt, Rinehart and Winston, New York, New York, to Eliot Porter. November 12, 1985.