E. F. Porter, Providence, Rhode Island, to Grandfather [Eliot Porter]. 1989.

Katherine Taylor, Shady Hill School, Cambridge, Massachusetts, to Eliot Porter. February 18, 1946.

Katherine Taylor, Shady Hill School, Cambridge, Massachusetts, to Eliot Porter. September 17, 1942.

The American Ornithologist's Union Certification. September 30, 1947.

Grace Loomis, Bryon, New York, to Laura Gilpin. September 10, 1910.

Steve Traudt, Synergistic Visions, Lincoln, Nebraska, to Eliot Porter. December 20, 1983.

Pat [Patrick Porter] to Mom and Pop [Eliot and Aline Porter]. June 15, 1971.

Katherine Taylor, Shady Hill School, Cambridge, Massachusetts, to Eliot Porter. December 3, 1945.

Otto Simon, Washington, D.C., to Laura Gilpin. September 2, 1916.

Jonathan Porter, Boulder, Colorado, to Mummy and Daddy [Aline and Eliot Porter]. November 2, 1962.

Photograph of open-trash pit near Blue Lake. October 6, 1968.

Grace Brooke, Washington, D.C., to Laura Gilpin. August 18, 1916.

Steve [Porter], Great Spruce Head Island, Maine, to Mummy and Daddy [Aline and Eliot Porter]. July 21, 1989.

Brenda Putnam, New York, New York, to Laura Gilpin. September 28, 1916.

C. W. Teal, Salon Chairman, Omaha International Salon of Photography, Omaha, Nebraska, to Laura Gilpin. October 20, 1948.

Laura Gilpin, Santa Fe, New Mexico, to Madeleine Gilpin. November 22, 1949.

Margaret Schweitzer-Bern, Forest Park Ranch, Cedar Crest, New Mexico, to Laura Gilpin. September 20, 1948.

Lucy J. M. Taylor [Cousin Lucy], High Bridge, New Jersey, to Laura Gilpin. August 25, 1948.

Jerry Bywaters, Director, Dallas Museum of Fine Art, Dallas, Texas, to Laura Gilpin. December 28, 1949.

Laura Gilpin, Santa Fe, New Mexico, to Howard Thomas, University of Georgia. June 25, 1948.