Harold K. Hochschild, President, The Adirondack Historical Association, Blue Mountain Lake, New York, to Eliot Porter. September 2, 1965.

Robert Toland, Jr., Vice-President, Development, The Academy of Natural Sciences, Philadelphia, Pennsylvania, to Mrs. Eliot Porter. August 16, 1971.

Nell Dorr to Elizabeth Koons Howe. n.d.

John Howard Griffin to Nell Dorr. November 13, 1968.

Margaretta Mitchell to Nell Dorr. May 25, 1961.

Grace M. Mayer, New York, New York, to Nell Dorr. April 17, 1965.

Margaretta and Frederick Mitchell to Nell Dorr. May 14, 1961.

Margaretta Mitchell to Nell Dorr. February 11, 1974.

Margaretta Mitchell to Nell Dorr. April 9, 1965.

Rose Mentzel, Stuttgart, Germany, to Nell Dorr. June 18, 1956.

Erwin E. Smith, School of the Museum of Fine Arts, Boston, Massachusetts, to L. B. Thomas. February 1, 1909.

Erwin E. Smith, School of the Museum of Fine Arts, Boston, Massachusetts, to L. B. Thomas. March 29, 1909.

Joe A. Grant, Co-Operative Extension Work, Troy, Missouri, to Erwin E. Smith, August 4, 1930.

Edward Dickson, Editor and Publisher, Platinum Print, New York, New York, to Clara E. Sipprell. March 15, 1914.

Carlotta Corpron, Denton, Texas, to Beth Gates-Warren, Sotheby’s. October 29, 1986.

A. C. Michener, Advertising Dept., John Morrell & Co., Ottumwa, Iowa, to Erwin E. Smith. April 24, 1933.

Cornell Capa, Executive Director, The International Fund for Concerned Photography Inc., New York, New York, to Eliot Porter. October 12, 1971.

Spencer B. Beebe, Vice President, Director, The Nature Conservancy International Program, Portland, Oregon, to Eliot Porter. June 11, 1984.

Spencer B. Beebe, Vice President, Director, The Nature Conservancy International Program, Portland, Oregon, to Eliot Porter. November 21, 1984.

Spencery B. Beebe, Vice President, Director, The Nature Conservancy International Program, Portland, Oregon, to Eliot Porter. May 2, 1984.