Jack Loeffler, Santa Fe, New Mexico, to Mrs. Porter. March 31, 1971.

Eliot Porter to Merion Edey, Chairman, League of Conservation Voters. September 11, 1972.

David Brower, Executive Director, Sierra Club, San Francisco, California, to Eliot Porter. September 18, 1962.

Agreement between Eliot Porter and E. P. Dutton Co., Inc. September 23, 1977.

Eliot Porter to Dr. William Ruckelshaus, Environment Protection Agency. May 2, 1971.

[Eliot Porter] to John B. Oakes, Editorial Page Editor, The New York Times. January 8, 1979.

Business Card of Patricia S. Rambach, Sierra Club, New York, New York. n.d.

Agreement between Eliot Porter and Book-of-the-Month Club. March 14, 1969.

Alan B. Eirinberg, Vice President, Exchange National Bank of Chicago, Chicago, Illinois, to Eliot Porter. February 15, 1968.

Agreement between Eliot Porter and Henry David Thoreau with Russell & Volkening, Inc. and Shinrin Shobo Ltd. November 13, 1978.

Mrs. Llewellyn Thompson, Director, Art in Embassies Program, Washington, D.C., to Eliot Porter. January 31, 1973.

Permission Request for selections from "In Wildness Is the Preservation of the World" and "Summer Island, Penobscot Country." n.d.

Contract between Eliot Porter and C. P. Dutton & Co., Inc. December 30, 1969.

Wendy Goldwyn, Associate Editor, Sierra Club Books, to Eliot Porter. September 29, 1975.

Harold K. Hochschild, President, The Adirondack Historical Association, New York, New York, to Eliot Porter. December 6, 1965.

Wade Van Dore, Clearwater Beach, Florida, to Eliot Porter. July 10, 1978.

Autumn, page 118. n.d.

Journal IV List and page 47. n.d.

Autumn, page 152. n.d.

Glen Canyon of the Colorado River. n.d.