M. A. Wilson, T. B. Hagstoz & Son, Refiners and Assayers, Philadelphia, Pennsylvania, to Laura Gilpin. September 30, 1924.

Samuel A. Grimes, The Respess-Grimes Engraving Co., Inc., Jacksonville, Florida, to Eliot Porter. December 31, 1953.

Samuel A. Grimes, The Respess-Grimes Engraving Co., Inc., Jacksonville, Florida, to Eliot Porter. January 13, 1955.

Vivian Fletcher, Editor, Catalyst for Environmental Quality, New York, New York, to Eliot Porter. December 15, 1969.

Loraine Veitengruber, Staff Assistant Art in the Embassies Program, Department of State, Washington, D.C., to Eliot Porter. December 4, 1967.

Thomas Baird, Assistant Director, Dumbarton Oaks, Trustees for Harvard University, Washington, D.C., to Eliot Porter. February 3, 1967.

Natalie Roberts, Administrative Director, Friends of the Earth, Inc., San Francisco, California, to Board of Directors and Advisory Council. February 10, 1977.

M. Charles Seller, Executive Assistant to the President, Dickinson College, Carlisle, Pennsylvania, to Eliot Porter. May 8, 1979.

Eva C. Hoenig, Secretary, Columbia University, New York, New York, to Eliot Porter. June 30, 1969.

James I. Crews, Jr., Jacksonville, Florida, to Eliot Porter. October 27, 1968.

Martha C. Slotten, Archivist and Curator, Special Collections, Dickinson College, Carlisle, Pennsylvania, to Eliot Porter. May 31, 1979.

Frank B. Gill, Chairman, Visual Resources for Ornithology, Philadelphia, Pennsylvania, to Eliot Porter. August 20, 1982.

Martha Hill, Picture Editor, Audubon, The Magazine of the National Audubon Society, New York, New York, to Eliot Porter. July 29, 1982.

J. P. Myers, Director, The Academy of Natural Sciences, Philadelphia, Pennsylvania, to Eliot Porter. February 3, 1982.

Marie L. Pancho, Acomito, New Mexico, to Laura Gilpin. May 7, 1940.

Mary Elizabeth Bradley, Secretary to Mr. Maloney, U. S. Camera Publishing Corp., New York, New York, to Laura Gilpin. June 5, 1941.

Mary Elizabeth Bradley, Secretary to Mr. Maloney, U. S. Camera Publishing Corp., New York, New York, to Laura Gilpin. June 17, 1941.

Laura Gilpin, Colorado Springs, Colorado, to William H. Cowles. December 12, 1940.

C. A. Miller, The Stevens-Nelson Paper Company, New York, New York, to Laura Gilpin. October 2, 1940.

Miriam Phair Rhine, Chairman, Photographic Exhibits, New York World’s Fair of 1940, New York, New York, to Laura Gilpin. April 18, 1940.