"Selected Papers on Philosophy" by William James. n.d.

"Wilderness - Conflict and Conscience" by David R. Brower. June, 1957.

Autumn, page 57. n.d.

Bebo, St. Louis Post-Dispatch, Saint Louis, Missouri, to Pa [Eliot Porter]. December 19.

Brenda Putnam, Ogunquit, Maine, to Laura Gilpin. July 20, 1917.

Charles I. Berg, New York, New York, to Laura Gilpin. October 8, 1919.

N. V. Moerdyke, Secretary, Camera Pictorialists of Los Angeles, Los Angeles, California, to Laura Gilpin. n.d.

Otto Simon, Washington, D.C., to Laura Gilpin. August 10, 1916.

Ralph B. Bonwit, Director of Exhibits, Photographic Club of Baltimore City, Baltimore, Maryland, to Laura Gilpin. June 4, 1924.

Walter L. Hervey, New York, New York, to Laura Gilpin. December 23, 1921.

Clarence H. White, Clarence H. White School of Photography, New York, New York, to Laura Gilpin. November 1, 1922.

Edgar Felloes, Associate Editor, Camera Craft, San Francisco, California, to Mary C. Sauter. March 23, 1922.

J. Nilsen Laurvik, Director, San Francisco Museum of Art, San Francisco, California, to Laura Gilpin. November 16, 1922.

Gladys McConnell Fowler, Denver, Colorado, to Laura Gilpin. November 26, 1912.

Anne Simon, San Francisco, California, to Laura Gilpin. September 8, 1915.

Darkroom Enlarging Equipment and Supplies.

Condit Control Unit Model 2.

Boxte [Charles Porter], Heidelberg, Germany, to Grandfather [Eliot Porter]. December 7, 1986.

Gladys McConnell Fowler, Colorado Springs, Colorado, to Laura Gilpin. February 17, 1911.

A. B. Titus, Friends of Art, San Diego, California, to Laura Gilpin. April 7, 1922.