The last box, an unprocessed addendum donated to the Library after Josephson's death, contains a large accordion file of correspondence, a chapter length memoir, a lengthy oral history transcript of an interview conducted in several sessions sometime in the 1970s by Dorothy Swanson (then head of the Tamiment Library), a 50th birthday scrapbook of letters from friends, greeting cards, etc., ca. 1930s-ca. 1970s