Betty and Powell Cottrille, Jackson, Michigan, to Eliot Porter. November 3, 1966.

Laura Gilpin, Santa Fe, New Mexico, to Charles. January 21, 1956.

Anne Dirkes Kobor, National Geographic Society, Washington, D.C., to Eliot Porter. July 17, 1963.

Draft of "The Great Crow Blackbird." n.d.

"The Great Crow Blackbird." n.d.

Stuart Gentling, to Jack Maguire, Executive Director, The Institute of Texan Cultures. February 29, 1984.

Frederick Cummins' Wild West Indian Congress and Rough Riders of the World, Louisiana Purchase Exposition, Saint Louis

Angeline Myra Keen, Palo Alto, California, to Laura Gilpin. October 14, 1973.

Robert Ketchum, Sun Valley, Idaho, to Eliot Porter. November 16, 1970.

Laura Gilpin, Colorado Springs, Colorado, to Erna Fergusson. June 19, 1939.

Laura Gilpin to Frank Wardlaw, Director, University of Texas Press. June 1, 1963.

Wireless Station Army Post, San Antonio, Tex.

Jim Bones, Austin, Texas, to Mr. and Mrs. Porter. August 13, 1968.

Alice Ford, Newtown, Pennsylvania, to Stuart Gentling. June 25, 1993.

First Draft of "Baja California." n.d.

Condition Report of Original Photographs for The Bare Feet. May 11.

Brian T. Wruck, Clarksville, Tennessee, to Laura Gilpin. September 30, 1978.

"Exhibits Concerning the Research Material for the Recently Discovered Audubon Painting of the Boat-Tailed Grackles." n.d.