When the Netflix series “Wednesday” needed a guillotine recently, it did not have to venture far. A North Hollywood prop house called History for Hire had one available, standing more than eight feet high with a suitably menacing blade. (The business offers pillories too, but the show wasn’t in the market for any.)

The company’s 33,000-square-foot warehouse is like the film and television industry’s treasure-filled attic, crammed with hundreds of thousands of items that help bring the past to life. It has a guitar Timothée Chalamet used in “A Complete Unknown,” luggage from “Titanic,” a black baby carriage from “The Addams Family.”

Looking for period detail? You can find different iterations of Wheaties boxes going back to the ’40s, enormous television cameras with rotating lenses from the ’50s, a hair dyer with a long hose that connects to a plastic bonnet from the ’60s, a pay phone from the ’70s and a yellow waterproof Sony Walkman from the ’80s.

History for Hire, which Jim and Pam Elyea have owned for almost four decades, is part of the crucial but often unseen infrastructure that keeps Hollywood churning, and helps make it one of the best places in the world to make film and television.