Goldthwaite H. Dorr III, Minneapolis, Minnesota, to Nell Dorr, October 31, 1963.

Nell Dorr to John Van Nostrand Dorr. n.d.

Nell Dorr to John Van Nostrand Dorr. n.d.

Nell Dorr to John Van Nostrand Dorr. August 22.

Nell Dorr, West Branch, Westport, Connecticut, to John Van Nostrand Dorr. n.d.

Nell Dorr to John Van Nostrand Dorr. n.d.

Fred H. Kennedy, Regional Forester, United States Department of Agriculture Forest Service, Albuquerque, New Mexico, to Eliot Porter. March 11, 1963.

"Tentative Program for Study of Aerial DDT Treatment of Santa Fe and Carson National Forests" by W. R. Bridges, Fish Pesticide Research Lab., U.S. Fish & Wildlife Service. n.d.

Diana Landau, Assistant Editor, Sierra Club Books, San Francisco, California, to Eliot Porter. January 3, 1978.

Nell Dorr to John Van Nostrand Dorr. n.d.

Shedrich Williames to Nell Dorr. n.d.

Shedrich Williames to Nell Dorr. n.d.

H.V. Kaltenborn, Brooklyn, New York, to John Van Nostrand Dorr. June 26.

John V. N. Dorr, Chairman, New York, New York, to Dr. Charles Malik, Minister of Foreign Affairs of Lebanon, Council on Foreign Relations, Inc. November 14, 1957.

Tine Everhard, Assistant, The Dorr Foundation, New York, New York, to Mrs. Oswald B. Lord, U. S. Representative, The Commission on Human Rights of the United Nations. April 24, 1956.

E. John Bullard, New Orleans Museum of Art, New Orleans, Louisiana, to Carlotta Corpron. June 21, 1974.

Carlotta Corpron, Denton, Texas, to Jean Tucker, University of Missouri, St, Louis, Missouri. August 28, 1979.

Manuel Lujan, Jr., Congress of the United States, House of Representatives, Washington, D.C., to Eliot Porter. August 9, 1971.

Nell Dorr, West Branch, Westport, Connecticut, to John Van Nostrand Dorr. July 6.

Nell Dorr to John Van Nostrand Dorr. n.d.