Eliot Porter to Linda B. Meyerriecks, National Geographic Book Service. March 27, 1984.

Joel Orlen, Executive Office, American Academy of Arts and Sciences, Cambridge, Massachusetts, to Fellows of the Academy. March 23, 1987.

Perry Merrill, Secretary, Los Alamos Ranch School, Otowi, New Mexico, to Laura Gilpin. February 28, 1940.

Edward M. Weyer, Natural History Magazine, New York, New York, to Laura Gilpin. April 16, 1940.

Edward M. Weyer, Natural History Magazine, New York, New York, to Laura Gilpin. April 25, 1940.

Laura Gilpin, Colorado Springs, Colorado, to Mr. Walter Frese, Hastings House Publishers. October 23, 1941.

Laura Gilpin, Colorado Springs, Colorado, to Mr. Willard D. Morgan, National Educational Alliance. October 23, 1941.

Laura Gilpin, Colorado Springs, Colorado, to Adelle Herring. January 16, 1940.

Elsie DeMary, Circulation Manager, U. S. Camera Publishing Corporation, New York, New York, to Laura Gilpin. n.d.

Anstiss Dana, Hastings House Publishers, New York, New York, to Laura Gilpin. March 21, 1941.

Walter Frese, Hastings House Publishers, New York, New York, to Laura Gilpin. September 8, 1941.

Laura Gilpin, Colorado Springs, Colorado, to Mr. Walter Frese, Hastings House Publishers. July 7, 1941.

Laura Gilpin, Colorado Springs, Colorado, to Mr. Walter Loban, Northwestern University. February 7, 1941.

Warwick C. Miller, Secretary, The Stevens-Nelson Paper Company, New York, New York, to Laura Gilpin. April 3, 1940.

Brenda Putnam, New York, New York, to Laura Gilpin. March 31, 1940.

Mrs. J. M. Vigil, Chimayo, New Mexico, to Laura Gilpin. March 25, 1940.

Edward M. Weyer, Natural History Magazine, New York, New York, to Laura Gilpin. April 19, 1940.

Laura Gilpin, Colorado Springs, Colorado, to Mr. Walter Frese, Hastings House Publishers. August 21, 1941.

Laura Gilpin, Colorado Springs, Colorado, to F. B. Garahan, Eimco Corporation. January 22, 1940.

Laura Gilpin, Colorado Springs, Colorado, to Russell R. Weir. September 9, 1940.