Boston University’s Howard Gotlieb Archival Research Center has a large collection from SF/F author, professor and literary critic Samuel R. Delany.
There are manuscripts, extensive journals, printed material from ca. 1959 to the present, correspondence, photographs, audio and video recordings and other material. Delany’s collection of underground comics is also housed at the research center.
The manuscripts include several unpublished and incomplete works of fiction and non-fiction alike. In addition, there are drafts of various articles, essays, stage plays, poems, screenplays, and public addresses.
Other material in the collection includes juvenilia, drawings and sketches, teaching materials and correspondence including letters from Leslie Fiedler, Joe Haldeman, Ursula K. Le Guin and Joanna Russ.
Sounds like a great resource! Unfortunately for the present, the research center hasn’t made any material available online. For more information, visit the Howard Gotlieb Archival Research Center website and the Samuel R. Delany collection scope description.
Note: I wasn’t paid or perked to mention this; just passing along a good thing. Because librarians rock! 🙂