John Howard Griffin to Nell Dorr. March 25, 1969.

Grace M. Mayer, The Museum of Modern Art, New York, New York, to Nell Dorr. October 1, 1962.

Rose Mentzel, Stuttgart, Germany, to Nell Dorr. June 29, 1956.

Rose Mentzel to Nell Dorr. n.d.

Frederick Mitchell, Mitchell/Bohn Publishers, San Francisco, California, to Nell Dorr. June 22, 1971.

Alfred Stieglitz to Nell Dorr. March 15, 1944.

Nell Dorr to John Van Nostrand Dorr. December 10.

Tasha Tudor to Nell Dorr. n.d.

Nell Koons, New York, New York, to John Van Nostrand Dorr. n.d.

Nell Koons, Norwalk, Connecticut, to John Van Nostrand Dorr. n.d.

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. n.d.

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

John Van Nostrand Dorr, Edison, New York, to Goldthwaite Dorr. n.d.

Elizabeth F. Wilder, Elementary Graphic Art, Ginn and Company, Lexington, Massachusetts, to Nell Dorr, August 31, 1972.

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

John Howard Griffin to Nell Dorr. March 2, 1971.

John Howard Griffin to Nell Dorr. May 3, 1971.

John Howard Griffin to Nell Dorr. August 3, 1972.