Alfred H. Barr, Jr., Director, The Museum of Modern Art, New York, New York, to Eliot Porter. February 4, 1943.

Grace M. Mayer, Special Assistant to the Director, The Museum of Modern Art, New York, New York, to Eliot Porter. September 28, 1959.

Ann E. Armstrong, Photography Department, The Museum of Modern Art, New York, New York, to Eliot Porter. June 14, 1946.

Nika P. Thayer, Secretary to Mr. Steichen, The Museum of Modern Art, New York, New York, to Eliot Porter. May 9, 1952.

Tim [Timothy Seldes], Russell & Volkening, Inc., New York, New York, to Eliot Porter. January 16, 1978.

Edna Gilpin, Corpus Christi, Texas, to Laura Gilpin. n.d.

Laura Gilpin, Santa Fe, New Mexico, to Ed Hannigan, U. S. Camera. November 16, 1949.

Laura Gilpin, Santa Fe, New Mexico, to Joaquin Ortega, New Mexico Quarterly Review, University of New Mexico. May 27, 1950.

Laura Gilpin, Santa Fe, New Mexico, to Alfred R. Orsini, The Dexter Press. May 8, 1953.

Milo E. Smith, Chicago Bridge and Iron Company, Chicago, Illinois, to H. D. Walters. January 15, 1951.

Brenda Putnam, Firenze, Italia, to Laura Gilpin. September 12, 1927.

Lillian B. Morrison, Colorado Springs, Colorado, to Laura Gilpin. September 14, 1927.

Miller Simon, U. S. Camera Publishing Corporation, New York, New York, to Laura Gilpin. February 18, 1941.

Tom Maloney, U. S. Camera Publishing Corporation, New York, New York, to Laura Gilpin. March 24, 1942.

Laura Gilpin, Colorado Springs, Colorado, to M. E. Bradley, U. S. Camera Publishing Co. June 19, 1942.

Laura Gilpin, Colorado Springs, Colorado, to Tom Maloney, U.S. Camera Publishing Corp. February 9, 1942.

John Macrae III, Editor-in-Chief, Holt, Rinehart and Winston, New York, New York, to Eliot Porter. August 4, 1983.

Journal I List and pages 83 to 463. n.d.

"The Physical Geology of the Grand Canon District" by Clarence E. Dutton. 1882.

Eliot Porter, Director, Santa Fe, New Mexico, to Jack G. Roof, Editor, Lone Star Sierran. February 27, 1969.