Laura Gilpin, Santa Fe, New Mexico, to Robin Z. Cronin. July 14, 1976.

"WWF Conservation Plan For the Kingdom of Nepal." n.d.

John L. Phillips, Associate Editor, American Heritage Publishing Co., Inc., New York, New York, to Eliot Porter. September 25, 1968.

Laura Gilpin, Santa Fe, New Mexico, to Patty Gilkyson. October 3, 1950.

Agreement between Eliot Porter and the Sierra Club. February 4, 1975.

Steve [Stephen Porter], Bellefonte, Pennsylvania, to Mummy and Daddy [Aline and Eliot Porter]. September 9, 1989.

Agreement between Ralph Carr and Scott and Stuart Gentling. n.d.

Henry M. Zeller, Conservation Chairman, Sierra Club, to Eliot Porter. August 14, 1968.

G. F. Crabtree, Jr., Assistant Curator on Native Arts, William Rockhill Nelson Gallery of Art, Kansas City, Missouri, to Laura Gilpin. October 14, 1960.

Robert W. Gray, Director, Work and Study Projects, American Friends Service Committee, Pasadena, California, to Laura Gilpin. May 31, 1956.

Frank Sulloway, Cambridge, Massachusetts, to Eliot Porter. October 29, 1969.

Ken, Rochester, New York, to Eliot Porter. February 21, 1979.

Laura Gilpin, Wichita, Kansas, to Major Hungerford. July 29, 1943.

Mayan Glyph Illustration and Notes. n.d.

Draft of various pages 132-176. n.d.

Draft of the Address to the Los Alamos High School Honor Students by Eliot Porter. n.d.

Peter Pollack, The Art Institute of Chicago, Chicago, Illinois, to Carlotta Corpron. December 26, 1952.

Laura Gilpin, Santa Fe, New Mexico, to K. Fuller Dean, Transcontinental and Western Airlines. October 15, 1945.

Laura Gilpin, Santa Fe, New Mexico, to Mrs. Maurice J. Dykeman. February 16, 1953.

Walter L. Goodwin, Duell, Sloan & Pearce, Inc., New York, New York, to Laura Gilpin. May 4, 1949.