Collection
- Georges Borchardt Inc. records, 1949-20241
- Gordon Norton Ray letters collection, 1661-19761
- Harold Clurman papers, 1922-19801
- Harold Frederic papers, 1887-19391
- Harold Matson Company Inc. records, 1937-19801
- Harper & Brothers Records, 1817-19291
- Harper & Row Publishers records, 1935-19731
- Harry Scherman papers, 1937-19691
- Helene Hanff papers, 1931-19951
- Henry James letters, 1894-19151
- Henry Morton Robinson papers, 1915-19651
- Henry Parker Willis papers, 1863-19371
- Herbert Gold papers, 1951-19841
- Herman Wouk papers, 1915-2003, bulk 1940-19601
- Hodder and Stoughton records, 1875-19141
- Houghton Mifflin Company letters, 1859-18601
- Hubbard family letters, 1849-19501
- Independent Literary Agents Association records, 1975-19891
- Isidor Schneider Papers, 1925-19751
- Jack Harris Samuels English and American literary manuscripts and letters collection, [1630]-19641