The university announced the acquisition this week. The archives will be available to scholars, students and filmmakers and include the original annotated "Night of the Living Dead" script and a foam latex zombie head.
University officials say the collection will be used to build an international resource for the study of horror and science fiction. Romero came to Pittsburgh in the late 1950s to study graphic art. He launched his career with commercials and shorts, including work for Mr. Rogers' Neighborhood.
Romero died in 2017.