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

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

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

List of Bird Plates. n.d.

Joel Orent to Eliot Porter. n.d.

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

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

Political Prisoners in Military Prisons, National Civil Liberties Bureau. November 21, 1918.

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

Nancy P. Kefauver, Advisor on Fine Arts, Department of State, Washington, D. C., to Laura Gilpin. November 6, 1967.

"Texas Tome: Hefty bird book has hefty price" by Bryce Milligan. October 11, 1986.

Elizabeth Cowles, Delhi, India, to Laura Gilpin. October 2, 1950.

"Violin and Music Lessons with Scott Gentling" by Scott Lennox. 2006.

Eliot Porter, Sunset, Maine, to Ken. June 16, 1968.

List of Attendees at the United States Antarctic Research Program, 1975 Orientation Session. 1975.

Cottage Chrnoicles from the Van Zandt Cottage Friends, Inc. Fall, 2005.

Southwestern Historical Quarterly. January, 1989.

Joel Orent to Eliot Porter. n.d.

Style Sheet for the Enduring Navaho by Laura Gilpin. Undated

Letter from Mark O. Hatfield and George S. McGovern, United States Senator, United States Senate, Washington, D.C. May, 1971.