"The Provenience of the Offerings: Tribute and Cosmovision" by Joanna Broda. n.d.

Joel Orent to Eliot Porter. n.d.

Draft of [Chapter IV]. n.d.

"Nature Photography and Conservation." n.d.

Draft Manuscript 5. n.d.

Draft of "I. Introduction" edited by Dutton. n.d.

Scott Gentling, to Kathleen Penny. April 18, 2005.

"United Feathers of America" by Robert McCracken Peck. n.d.

John Peke, Acting Chief, Services Branch, Office of Price Stabilization, Albuquerque, New Mexico, to Laura Gilpin. April 24, 1952.

Draft of "The Place No One Knew." n.d.

Bill DeWind, Natural Resources Defense Council, New York, New York, to Eliot Porter. June 29, 1987.

Edmund S. Muskie, United States Senator, United States Senate, Washington, D.C., to Eliot Porter. November 13, 1973.

Draft of "Retrospective," Pages 1 to 28. n.d.

Draft of Chapter VIII, "Volcan Alcedo." n.d.

Draft manuscript. n.d.

Laura Gilpin, Santa Fe, New Mexico, to Guy Neff, The Meredith Publishing Company. January 6, 1959.

Draft of Chapter II, "The Cristobal Carrier." n.d.

Chick and Anne Hebert, Santa Barbara, California, to Eliot Porter. January 13, 1971.

Congressional Record Proceedings and Debates of the 92nd Congress, Vol. 117, No. 74. May 19, 1971.

Statement of Mr. Charles D. Owens, President and Mr. Robert T. Keen, Executive Vice President on Proposed Ambient Air Quality Standards and Air Control Regulations. September 23, 1969.