The collection consists of papers of "Valtin," the literary pseudonym of Richard Julius Herman Krebs. Included is correspondence with family members, literary agents, and friends such as Roger N. Baldwin, Arthur Garfield Hayes, and William Allen White. Also present are lectures, articles, drafts for a novel, Wintertime, material for his autobiography, Out of the Night, and subject files documenting Valtin's career as a German secret agent of the Communist International, a Nazi terrorist, and, later, a war correspondent for the United States Army in World War II.