Sheila Turner, Editor, Images of Man, Scholastic Magazines Inc., New York, New York, to Eliot Porter. November 3, 1972.

Adele Auchincloss, Secretary, Chairman's Council, Natural Resources Defense Council, New York, New York, to Eliot Porter. June 8, 1988.

John Macrae III, Editor-in-Chief, Holt, Rinehart and Winston, New York, New York, to Eliot Porter. July 11, 1983.

Willard W. Beatty, Department of the Interior Bureau of Indian Affairs, Washington, D. C., to Helen M. Post. June 7, 1940.

Paul L. Fickinger, Department of the Interior Bureau of Indian Affairs, Washington, D. C., to Helen M. Post. October 10, 1940.

[?], Department of the Interior, Washington, D. C., to Helen M. Post. July 23, 1940.

Nell Dorr to John Van Nostrand Dorr. n.d.

Nell Dorr to John Van Nostrand Dorr. n.d.

Nell Dorr to John Van Nostrand Dorr. n.d.

Shipment orders of Motion Picture Prints, The Golden Key and The Singing Earth. May 21, 1957.

Nell Dorr, West Branch, Westport, Connecticut, to John Van Nostrand Dorr. n.d.

Nell Dorr to John Van Nostrand Dorr. n.d.

Nell Dorr to John Van Nostrand Dorr. n.d.

Nell Dorr to John Van Nostrand Dorr. n.d.

W. T. Okie, J. M. Mathes Incorporated Advertising, New York, New York, to Eliot Porter. April 4, 1969.

Keith Henney, Editor, Photo Technique The Magazine of Practical Photography, New York, New York, to Kenneth Henney. January 31, 1940.

David L. Garrison, A.O.U. Local Committee, New England Museum of Natural History, Boston, Massachusetts, to Eliot Porter. October 15, 1940.

Keith Henney, Editor, Photo Technique The Magazine of Practical Photography, New York, New York, to Eliot Porter. July 25, 1941.

William Bridges, Curator of Publications, New York Zoological Society, New York, New York, to Eliot Porter. October 6, 1945.

N. D. Deniston, Assistant Project Manager, HERO/Palmer Research System, Anaheim, California, to Eliot Porter. July 8, 1976.