Agnes Walker, Embudo, New Mexico, to Laura Gilpin. November 10, 1949.

Royal Lowy, New York, New York, to Laura Gilpin. October 18, 1949.

Laura Gilpin to Walter Frese, Hastings House. April 3, 1954.

Janet Quarles, Pueblo, Colorado, to Laura Gilpin. n.d.

Notes from Valley of Rio Grande Stevens Pamphlet 1864. n.d.

Winnie Allen, Archivist, Library of the University of Texas, Austin, Texas, to Laura Gilpin. July 31, 1950.

Laura Gilpin to Walter Frese, Hastings House. April 27, 1954.

Laura Gilpin to Mary V. Ford, Hastings House. September 20, 1948.

Notes on platinum printing and single plate color process printing. n.d.

Walter Frese, Hastings House, New York, New York, to Laura Gilpin. August 11, 1950.

Jerry Bywaters, Director, Dallas Museum of Fine Arts, Dallas, Texas, to Laura Gilpin. February 2, 1950.

Ruth, Boston, Massachusetts, to Laura Gilpin. September 27, 1949.

Laura Gilpin to Walter Frese, Hastings House. March 17, 1942.

Walter Frese, New York, New York, to Laura Gilpin. November 24, 1941.

Walter Frese, New York, New York, to Laura Gilpin. December 11, 1941.

Walter Frese, Hastings House, New York, New York, to Laura Gilpin. June 23, 1948.

Frederic L. Thomas, Sandy Spring, Maryland, to Laura Gilpin. October 11, 1949.

Edwin L. Sabin, Hemet, California, to Laura Gilpin. November 18, 1949.

Laura Gilpin to Walter Frese, Hastings House. August 30, 1945.

Laura Gilpin to Walter Frese, Hastings House. February 23, 1955.