Tom Gander to Nell Dorr. n.d.

Bradford Kelleher, Sales Manager, The Metropolitan Museum of Art, New York, New York, to John V. N. Dorr. December 19, 1955.

B. W. Kerrigan, Secretary, The Institution of Mining and Metallurgy, London, England, to John V. N. Dorr, Dorr-Oliver Inc. July 29, 1959.

Eugene S. Troy, Asst. to Dr. Dorr, to Charles A. Jurgensen, Vice President of Manufacturing, De Laval Steam Turbine Company. April 20, 1955.

Letter from Ken Lieberman, Executive Vice President, Berkey K&L Custom Services, New York, New York. August 25, 1977.

Letter from Ken Lieberman, Executive Vice President, Berkey K&L Custom Services, New York, New York. August 15, 1977.

Letter from Jay Tanen, Gallery Director, The K&L Gallery of Photographic Art, New York, New York. February 1, 1978.

Stephen L. Schlensinger, Secretary, John Simon Guggenheim Memorial Foundation, New York, New York, to Eliot Porter. November 24, 1976.

William K. Verner, Research Assistant, The Adirondack Museum, Blue Mountain Lake, New York, to Eliot Porter. April 4, 1969.

Harvey Brooks, President, American Academy of Arts and Sciences, Boston, Massachusetts, to Madame Ekaterina A. Furtseva, Ministry of Culture. October 3, 1973.

William K. Verner, Research Assistant, The Adirondack Museum, Blue Mountain Lake, New York, to Eliot Porter. December 7, 1968.

Letter from Ken Lieberman, Executive Vice President, Berkey K&L Custom Services, New York, New York. September 12, 1977.

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.