K. E. Foster, Director, Museum of Navajo Ceremonial Art , Santa Fe, New Mexico, to Laura Gilpin. December 28, 1961.

Robert M. Peck, Fellow of the Academy, The Academy of Natural Sciences, Philadelphia, Pennsylvania, to Eliot Porter. June 25, 1985.

Bill Holman, Austin, Texas, to Stuart Gentling. May 10, 1987.

Draft Contract. March 14, 1986.

Ron Tyler, Director, The Texas State Historical Association, Austin, Texas, to Stuart Gentling. August 29, 1988.

Stuart Gentling, to Martha Hill, Picture Editor, Audubon Magazine. January 2, 1988.

Fort Worth Museum of Science and History Gentling Donation Spread Sheet. March 25, 1988.

Jon Burris, Director of Photography, National Cowboy Hall of Fame, Oklahoma City, Oklahoma, to Laura Gilpin. September 12, 1977.

Journal II List and pages 44 to 481. n.d.

Photocopy of Chapter V, "Fernandina." n.d.

Seneca Soundings by Louis Balsam. n.d.

Katherine Rutledge, Baton Rouge, Louisiana, to Stuart Gentling. n.d.

Cyndi Hughes, Director, Texas Book Festival, Austin, Texas, to Scott and Stuart Gentling. July 18, 2001.

"The Burrowing Owl." n.d.

Pamphlets and Clippings for American Photographers and the National Parks Exhibitions. n.d.

Jonathan Porter, Taipei, Taiwan, to Eliot and Aline Porter. February 18, 1968.

The International Fund For Concerned Photography Inc. Information. n.d.

Harriet Calvin Latimer, Armand Bayou Nature Center, Houston, Texas, to Scott and Stuart Gentling. November 17, 1987.

List of Bird Plates. n.d.

"Strip Mining - Coast To Coast" by Harr M. Caudill. May, 1971.