The collection consists of materials from inventor William S. Holdaway, including drawings and plans for various drilling equipment, and patents for a centrifugal pump.

The collection consists of materials related to John Jennings' graphic novel adaptation of Octavia Butler's Kindred.

The collection consists of manuscript drafts, notes, drawings, and author's copies related to the works of science fiction and horror author Marc Laidlaw. Also included in the collection are items related to Laidlaw's work as a scriptwriter for the video game developer Valve Corporation.

This collection contains slides, drawings, photographs, and other material on the University of California, Riverside, Libraries photographs. Mostly contains architect drawings, and photographs on staff, students, and other aspects of the UCR Libraries.

The collection consists of sketches, notes, research, and other materials from fantasy author Daniel José Older, mostly related to his Shadowshaper Cypher series of books.

The collection consists of materials from science fiction fan artist Stu Shiffman, including fanzines, t-shirts, and notebooks featuring his artwork.

The collection consists mainly of photographs of Francisco “Pancho” Villa, a Mexican Revolutionary general and prominent figure during the Mexican Revolution in the early 20th century. Photographs in the collection include portraits of Villa, Villa with his troops and other military figures, Villa's murder in 1923, and photographs of Villa’s family.

The collection consists of photographs, drawings, and documents related to Riverside County history.

The collection consists of materials related to the comic book Elfquest created by Wendy and Richard Pini in 1978. Items in the collection include articles related to Elfquest, fan art, Elfquest Fan Club materials, and fanzines, most notably a full run of the "Lodestone" newsletter.