. . . . . . . . . . . . . . . . . . . . . . "Manuscripts for publication" . "Archives" . "Clippings" . . . . . . . "Correspondence" . . . . . "Correspondence, 1930-1967, includes fan mail; communications with other writers including Isaac Asimov, Ray Bradbury, Andre Norton, and others; correspondence with book and film companies. Files, 1951-1967, contain personal financial records and material on various organizational affiliations. Manuscript material, 1962-1969, includes that of Ackerman and others for whom he acted as agent. Published material, 1933-1967, relates to science fiction and includes catalogs, work lists, booklets, clippings, and references." . . . .