Victor W. Hungerford, Sherwin and Hungerford, Attorneys at Law, Colorado Springs, Colorado, to Laura Gilpin. January 7, 1943.

Laura Gilpin, Wichita, Kansas, to Mr. J. R. Roux. March 5-25[?], 1943.

Willard D. Morgan, General Editor, Photography Division, National Educational Alliance, New York, New York, to Laura Gilpin. June 3, 1943.

Laura Gilpin, Colorado Springs, Colorado, to Mr. T. J. Maloney, U. S. Camera. February 20, 1941.

Leon Daniel, General Manager, PIX Incorporated, New York, New York, to Laura Gilpin. August 1, 1945.

Fish Williams, Taylor-Wharton Iron and Steel Company, New York, New York, to Laura Gilpin. October 31, 1945.

Laura Gilpin, Colorado Springs, Colorado, to Mr. Willard D. Morgan, National Educational Alliance. October 31, 1941.

Walter Loban, School of Education, Northwestern University, Evanston, Illinois, to Laura Gilpin. March 17, 1941.

Eliot Porter, Director, Santa Fe, New Mexico, to Hugh Nash, Editor, Sierra Club Bulletin. January 26, 1969.

Summer, page 167. n.d.

"Through the Grand Canyon from Wyoming to Mexico" by E. L. Kolb. 1920.

Eliot Porter, Santa Fe, New Mexico, to Glen Macleod, The University of Connecticut. December 7, 1983.

Glen MacLeod, The University of Connecticut, Waterbury, Connecticut, to Eliot Porter. October 23, 1983.

Journal VI List and pages 260 and 277. n.d.

C. William Simmons, Secretary, Sierra Club, San Francisco, California, to Eliot Porter. July 11, 1968.

"Testimony Before the Senate Interior and Insular Affairs Committee" by Eliot Porter. n.d.

Dorothy Norman, Twice A Year, Woods Hole, Massachusetts, to Eliot Porter. July 27, 1946.

Wilma Stern, Penn State, University Park, Pennsylvania, to Eliot Porter. August 17, 1988.

Dorothy Norman, Twice A Year, Woods Hole, Massachusetts, to Eliot Porter. August 30, 1946.

Draft and notes for the title page of "The Place No One Knew" 25th Anniversary. n.d.