The Joyce Mary Horner Papers consist chiefly of journals written from 1930-1961 and 1975-1977 and includes correspondence, 1942-1976; published and unpublished writings, circa 1921-1986, including articles and reviews relating to her novels; records from her English courses at Mount Holyoke; biographical material and memorabilia; and photographs of Horner, her relatives and friends, circa 1880-1968.