J. David Ortiz, President, Pojoaque Valley Water Users Association, to Member of the Pojoaque Valley Water Users Association. May 28, 1985.

Lloyd P. Fadrique, Secretary, New Mexico Council on Photography, Santa Fe, New Mexico, to Eliot Porter. February 11, 1987.

Susan [A.] Smith, Director of Support Services, National Geographic Society, Washington, D.C., to Eliot Porter. August 6, 1990.

Larry Rosler, Henry Holt and Company, New York, New York, to Eliot Porter. February 13, 1986.

Ken [Lieberman], Ken Lieberman Laboraties, Inc., New York, New York, to Eliot Porter. September 26, 1985.

Helen [Brush] to Eliot Porter. August 1, 1988.

David R. Brower, President, Friends of the Earth, San Francisco, California, to Friends of the Publishing Program. April 5, 1973.

Rich [Clarkson], Director of Photography, National Geographic Magazine, Washington, D.C., to Eliot Porter. June 3, 1986.

Frank N. McLaughlin, Eastman Kodak Company, Rochester, New York, to Eliot Porter. April 21, 1983.

Eliot Porter to William B. Goodman, Senior Editor, Harcourt Brace Jovanovich, Inc. May 12, 1975.

Eliot Porter, Director, Santa Fe, New Mexico, to Jack G. Roof, Editor, Lone Star Sierran. February 27, 1969.

Eliot Porter, Great Spruce Head Island, Maine, to C. William Simmens, Secretary, Sierra Club. July 22, 1968.

G. Gervaise Davis III, Walker, Schroeder, & Davis, Monterey, California, to Edgar Wayburn, President, The Sierra Club. February 6, 1969.

Eliot Porter, Santa Fe, New Mexico, to Edgar Wayburn, President, The Sierra Club. January 23, 1969.

Eliot Porter, Great Spruce Head Island, Maine, to Phillip Berry, President, Sierra Club. June 10, 1969.

Eliot Porter to John C. Willey, Editor-in-chief, William Morrow & Company, Inc. May 14, 1976.

Timothy Seldes, Russell & Volkening, Inc., New York, New York, to Eliot Porter. June 18, 1976.

Carol Stewart, Special Projects Manager, Meisel Photochrome Corporation, Dallas, Texas, to Eliot Porter. January 14, 1977.

Davis Pratt, Department of Photography, The Museum of Modern Art, New York, New York, to Eliot Porter. July 15, 1963.

Toby Cooper, Wildlife Programs Coordinator, Defenders of Wildlife, Washington, D.C., to Eliot Porter. March 3, 1977.