Louis H. Laney, District Agent, United States Department of the Interior Fish and Wildlife Service, Albuquerque, New Mexico, to Eliot Porter. November 19, 1959.

Draft of [Chapter I]. n.d.

A. H. S. Craeybeckx, Manager Editorial Department, Gevaert Photo-Producten N. V., Antwerp, Belgium, to Nell Dorr. January 5, 1955.

Noel Potter, Jr., Department of Geology, Dickinson College, Carlisle, Pennsylvania, to Eliot Porter. January 19, 1979.

Jeanne, E. P. Dutton, New York, New York, to Eliot Porter. January 24, 1979.

Manuscript text. n.d.

Publishing Agreement between Eliot Porter and the Sierra Club. n.d.

"The Great City Square: Government in Ancient Cholula" by Michael Lind. August 7, 1993.

"Report by Council Secretary of Inspection Trip to Blue Lake with Taos District Ranger" by Paul J. Bernal, Taso Pueblo Council Secretary. October 1, 1968.

Draft of "Retrospective," Pages 12 to 23. n.d.

"Texas Tome: Hefty bird book has hefty price" by Bryce Milligan. October 11, 1986.

"A Recently-Discovered Painting of Boat-Tailed Grackles by John James Audubon." n.d.

Laura Gilpin, Colorado Springs, Colorado, to Ira W. Martin. May 28, 1929.

Laura Gilpin, Santa Fe, New Mexico, to Walter L. Goodwin, Duell, Sloan & Pearce. April 22, 1949.

Elizabeth Konigsberger, Museum of Modern Art, New York, New York, to Carlotta Corpron. January 10, 1957.

The American Exhibition, Earl's Court, West Brompton, and West Kensington

Draft of "Retrospective," Pages 1 to 4. n.d.

Unspecified Draft, Pages 56 to 71. n.d.

Draft text. n.d.

Letter. January 19, 1952.