"Lecture subject, photography of nature, natural scene." n.d.

"Bug Wars: The Farmers Strike Back" by Richard Wolkomir. June, 1981.

Chichen Itza. Sequence of pictures and text in book. n.d.

"Introduction" by Scott Gentling. December 30, 2002

Crawford H. Greenewalt, Du Pont Building, Wilmington, Delaware, to Eliot Porter. March 14, 1979.

Laura Gilpin, Colorado Springs, Colorado, to Mr. Walter Frese, Hastings House Publishers. May 2, 1941.

"Sober Facts on P&W Pulp Mill." August, 1969.

"The Dream Pictures of My People" by Laura Gilpin. n.d.

Pages from Science, Volume 238, Number 4823. October 2, 1987.

John D. Jameson, Arizona-Sonora Desert Musuem, Tucson, Arizona, to Eliot Porter. August 27, 1973.

B. [Porter], St. Louis Post-Dispatch, Saint Louis, Missouri, to Pa [Eliot Porter]. October 13, 1986.

"Traveler in the Wilderness" by Cid Ricketts Sumner. n.d.

"Woodland Photography With Daylight Ektachrome." n.d.

Stuart Gentling, to David. March 15, 1983.

"Your Stay At McMurdo Station Antactica." 1975-1976.

Draft of "Palmer Station Again," 85 to 107. n.d.

"The Roots of Belief." n.d.

Laura Gilpin, Santa Fe, New Mexico, to Charles Kerlee. May 15, 1951.

Greta Ehrlich, Topango, California, to Laura Gilpin. September 20, 1975.

Muriel H. Parry, Editor, The Society of Woman Geographers, Washington, D. C., to Fellow Member. May 20, 1974.