The Arkham House Collection consists of correspondence from August Derleth to Howard Wandrei. Derleth, a writer, founded Arkham House to publish and keep in print the work of Howard Phillips Lovecraft, a friend and fellow writer. Lovecraft died in 1937; for the next two years Derleth tried unsuccessfully to find a publisher for Lovecraft's writings. Using money from prepaid orders and the personal investment of Donald Wandrei (brother of Howard Wandrei), Derleth founded Arkham House in 1939. Arkham House published science fiction works by Lovecraft and other writers such as Algernon Blair, Clark Ashton Smith and Henry S. Whitehead.

In his letters to fellow science-fiction writer Howard Wandrei, August Derleth writes about his publishing efforts at Arkham House, his own writing career and the details of his personal life. His letters also mention other authors and publishing houses. The letters date from 1930-1953; most letters are accompanied by the original stamped envelopes.

The Burgess Collection consists of the first draft of the unpublished novel Puma, written in 1976 as a film treatment that was never made into a film. The novel is accompanied by a letter of explanation from Brian Kirby to Jim O'Roark, February 7, 1979.

Portions of the novel, which was pitched as an update of the classic film When Worlds Collide and which would have told the story of a planet [named "Puma"] hurtling towards Earth, was later adapted by Burgess into his 1982 novel The End of the World News.

This collection consists of galleys of uncorrected proofs for Del Rey's 1975 short story collection The Early Del Rey.

This collection consists of numerous manuscripts and related materials - including outlines, notes, and proofs - of works by noted science fiction author Robert Silverberg.

This collection contains the original manuscript, with author's revisions, of Leiber's 1979 story "The Button Molder", and includes as well as a copy of the first hardbound appearance of the story: Whispers (October 1979), which is signed by Leiber, the work's artist, and the work's editor. "The Button Molder" won the British Fantasy Award for Best Short Fiction in 1980.

Also included, the manuscript, with edits, of Leiber's 1973 review of the anthology Hauntings, intended for the "Fantasy Books" section of the magazine Fantastic Stories of Imagination.

This collection consists of the manuscripts and associated materials, that document the life and career of award-nominated science fiction and fantasy writer Kay Kenyon. Materials in this collection include typescripts, drafts, notes, summaries, and correspondence.

This collection consists of typescripts of several of Binder's novels with most including the author's corrections and accompanying carbons, and a number of short stories with most corrected including carbons and in some cases tearsheets from the magazines in which the stories initially appeared, corrected and with continuation sheets for expansion into full-length books.

In addition, there are close to 300 business and personal letters, photographs, postcards, and other files including broadcasting projects, non-fiction articles, letters and critiques from literary agents and publishers, materials on Space World, and several folders of unfinished manuscripts. Unusual "picture cards" featuring text and photographs on postcards are included.

Excluding duplicate carbons, letters, etc., there are approximately 2,300 pages (mostly 11 x 8.5-inches) of typescript with a total of about 575,000 words. Many of Binder's letters are on letters received or on the backs of manuscript or script fragments.

This collection contains a 286-page unproofed typed copy of Foster's 1977 novel The End of the Matter.

This collection consists of Oliver's manuscripts, notes, and correspondence, published books, magazine appearances, books collecting his stories, foreign-language editions, clippings, and other related material. Chronologically, the collection ranges from the mid-1950s through the mid-1990s.

This collection contains the typed manuscript for Tucker's 1954 novel Wild Talent, as well as the original typescript and page proofs for Tucker's 1974 novel Ice and Iron.

This collection consists of manuscripts and literary materials from Mexican-Canadian fantasy and horror novelist, editor, and short-story writer Silvia Moreno-Garcia. Materials include versions and drafts (in paper and digital form) of her novels Signal to Noise (2015), Certain Dark Things (2016), and The Beautiful Ones (2017), among others.

This collection consists of numerous typewritten manuscripts of short stories and novels from science fiction author K.D. (Kathy Diane) Wentworth. Among other works, included is the manuscript for Wentworth's 1994 novel Moonspeaker, the first in her "House of Moons Chronicles" fantasy series.

This collection consists of 81 leaves of uncorrected galley proofs for Williamson's 1975 collection The Early Williamson.