Conscientious objector during World Wars I and II and founder of the farming cooperative Saline Valley Farms. Correspondence, diaries, notebooks, and other materials relating to all phases of his career, including his work as Y.M.C.A. worker in England, 1916-1917, and as teacher at Central China University, Wuchang, China, 1922-1926; also family correspondence of Philip H. and Almena S. Gray, 1874-1926; also photographs and motion pictures.
The Harold Gray papers have been divided into seven series: Correspondence; World War I era activities; Personal and Miscellaneous; Printed, clippings, and miscellanea; Family and genealogical; Saline Valley Farms; and Visual Materials (photographs and motion pictures). The great strength of the collection are correspondence, administrative files, diaries, and visual materials documenting the operation of the Saline Valley Farms. There is significant, though smaller quantities of papers detailing Gray's opposition to serving in the military during World War I and his career as a teacher in China in the 1920s.