Grace M. Mayer, Department of Photography, The Museum of Modern Art, New York, New York, to Eliot Porter. December 7, 1959.

Thomas M. Messer, Director, The Roswell Museum, Roswell, New Mexico, to Laura Gilpin. April 13, 1950.

Beaumont Newhall, George Eastman House, Rochester, New York, to Laura Gilpin. December 2, 1955.

Laura Gilpin, Santa Fe, New Mexico, to Mr. Shostal, The Shostal Color Agency. October 18, 1956.

Laura Gilpin, Santa Fe, New Mexico, to Susan Spiritus. July 8, 1977.

Paul Kutsche, Professor of Anthropology, The Colorado College, Colorado Springs, Colorado, to Laura Gilpin. April 1, 1976.

Walter Frese, Hastings House, New York, New York, to Laura Gilpin. April 30, 1952.

Laura Gilpin, Santa Fe, New Mexico, to John Bolles. July 26, 1963.

Laura Gilpin, Santa Fe, New Mexico, to Wendell Ott, Director, Roswell Museum. December 12, 1975.

Lee Witkin, Witkin Gallery, New York, New York, to Laura Gilpin. 1973.

Edward C. Porter, Fairview, North Carolina, to Eliot Porter. December 28, 1966.

Walter L. Goodwin, Duell, Sloan & Pearce, Inc., New York, New York, to Laura Gilpin. June 12, 1950.

Henry Schnakenberg, Newtown, Connecticut, to Laura Gilpin. May 19, 1958.

Indian Bill's Historical Wild West and Mexican Hippodrome

Michael A. Linshaw, Denver, Colorado, to Eliot Porter. July 22, 1971.

Bruno Ruepp, Scarsdale, New York, to Eliot Porter, Sierra Club. December 11, 1969.

Jean Hersholt, Academy of Motion Picture Arts and Sciences, Hollywood, California, to Karl Struss. August 18, 1947.

Laura Gilpin, Brownsville, Texas, to Paul Gardner, Director, William Rockhill Nelson Gallery of Art. December 26, 1948.

Michigan Audubon Society Newsletter, Volume 12, Number 1. January 27, 1964.

Draft of "Crawford H. Greenwalt's Bird Photography." n.d.