"500 Nations" by Pathways Productions. n.d.

"Bird Photography by Sychronized Flash Illumination." n.d.

Stuart Gentling, to Alice Ford. May 10, 1993.

"20th Century Photographs from the Collection of the Bowdoin College Museum of Art." February 28-March 24, 1988.

Draft of "Predators." n.d.

Draft 2 of "Porter Retrospective: Chapter Five." February 11, 1987.

Harold Jones, Director, Center for Creative Photography, The University of Arizona, Tucson, Arizona, to Laura Gilpin. June 4, 1975.

"The Protection of Freedom" address by Herbert Hoover. August 10, 1954.

Carolyn Tate, Lubbock, Texas, to Scott and Stuart Gentling. January 17, 2000.

The Broncho Buster

Agreement between Laura Gilpin and Duell, Sloan & Pearce, Inc. for the publication of Photographic Book on Rio Grande. May 25, 1945.

Aileen Nusbaum, Mesa Verde National Park, The United States Department of the Interior, Mancos, Colorado, to Laura Gilpin. February 25, 1925.

Joel Orent to Eliot Porter. n.d.

"Nature Photography and Conservation." n.d.

Draft Manuscript 5. n.d.

Draft of [Chapter IV]. n.d.

Letter from David. n.d.

Dave [David R. Brower], President, Friends of the Earth, Inc., San Francisco, California, to Eliot Porter. September 10, 1975.

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