George [Cannon] and Barrie [Rolleston], GC/BRC Photography, Ithaca, New York, to Eliot Porter. May 3, 1982.

Ivan Dmitri, Director, Photography in the Fine Arts, New York, New York, to Eliot Porter. March 20, 1961.

Blanche Lentz, The Wichita International Salon of Photography, Wichita, Kansas, to Laura Gilpin. January 4, 1946.

Laura Gilpin to Charles A. Pearce, Duell, Sloan & Pearce. September 10, 1953.

Laura Gilpin to Frank Wardlaw, Director, University of Texas Press. September 10, 1966.

"Northern Birds at Home in the Tropics" by John W. Fitzpatrick. n.d.

Herter Hilscher-Wittgenstein, Survival Barn, Princeton, New Jersey, to Laura Gilpin. December 28, 1974.

Client Card [Wickey, Harry, Cornwall, NY; Mitchell, Arthur, Trinidad, CO; Phillips, George, Brookings, SD; Dunn, Harvey, Amagansett, Long Island, NY; Davis]

Information from The Philadelphia Print Shop. n.d.

Catriona Glazebrook, to Stuart Gentling. October 17, 1998.

Address to the Los Alamos High School Honor Students by Eliot Porter. May 16, 1971.

Text and photo dimensions for Part 2: Mid Stream. n.d.

"Artist's Statement." n.d.

Jerry D. Drew, Pictorial Photographers of America, New York, New York, to Karl Struss. August 14, 1926.

K. Rose Wood, Director, Commission of Aging, State of New Mexico, Santa Fe, New Mexico, to Laura Gilpin. September 8, 1970.

Partial draft text about families. n.d.

Nancy Ellis, Little, Brown and Company Publishers, Boston, Massachusetts, to Eliot Porter. December 15, 1976.

Harold Diers, Salon Chairman, Omaha International Salon of Photography, Omaha, Nebraska, to Laura Gilpin. July 9, 1947.

Laura Gilpin, Santa Fe, New Mexico, to Bill [Webb?]. September 2, 1970.

Diarmuid Russell, Russell & Volkening, Inc., New York, New York, to Eliot Porter. October 4, 1968.