Gladys McConnell Fowler, Colorado Springs, Colorado, to Laura Gilpin. December 26, 1910.

Anne Simon, Denver, Colorado, to Laura Gilpin. September 15, 1915.

Gladys McConnell Fowler, Colorado Springs, Colorado, to Laura Gilpin. May 9, 1914.

Anne Simon, Atlantic City, New Jersey, to Laura Gilpin. January 2, 1916.

B., St. Louis Post-Dispatch, Saint Louis, Missouri, to Pa [Eliot Porter]. January 4.

E. F. [Porter], Ann Arbor, Michigan, to Grandpa [Eliot] P. n.d.

Gladys McConnell Fowler, Folsom, New Mexico, to Laura Gilpin. October 13, 1913.

Gladys McConnell Fowler, Toronto, Canada, to Laura Gilpin. August 8, 1915.

Otto Simon, Washington, D.C., to Laura Gilpin. September 26, 1916.

Laura Gilpin, R.M.S. Mauretania, Cunard Line, to Elizabeth Forster. April 28, 1922.

Antoinette V. Hervey, New York, New York, to Laura Gilpin. October 25, 1922.

Brenda Putnam, New York, New York, to Laura Gilpin. December 16, 1922.

Anne Simon, Washington, D.C., to Laura Gilpin. November 23, 1915.

Bachelor of Science in Industrial Chemistry issued to Eliot Porter from Harvard University. n.d.

Mary F. Wesselhoeft, New Glass Workshop, New York, New York, to Laura Gilpin. December 16, 1922.

Laura Gilpin, Santa Fe, New Mexico, to Brigadier General R. M. Montague, Sandia Base. July 13, 1948.

Frank R. [Frapuie?], American Photographic Publishing Company, Boston, Massachusetts, to Laura Gilpin. September 23, 1920.

W. L. Hyde, Attorney at Law, Superior, Montana, to Laura Gilpin. June 3, 1948.

Edward L. Roberts, Amarillo, Texas, to Laura Gilpin. August 23, 1948.

Silvia Saunders[?], Santa Fe, New Mexico, to Laura Gilpin. November 8, 1948.