The Real Silent Film Stars

The NMAH’s new show includes original costumes from the “Harry Potter” film series.

Psst. Hey, kid. You wanna see a batarang? “You Must Remember This,” a new permanent exhibit at the National Museum of American History puts Batman’s famous boomarang beside other American film memorabilia, as well as costumes from films including “Casablanca” and the “Harry Potter” series.

Backstory: The exhibit is part of a celebration honoring the brand-new Warner Bros. movie theater at the museum.

What’s New: Well, nothing is NEW, but that’s kind of the point. But there are some Bugs Bunny drawings you probably haven’t seen before, plus a silver telephone belonging to Warner Bros. founder Jack Warner.

Good to Know: In Jack Warner’s address book, also on display, Cecil B. DeMille is listed at “2000 DeMille Rd., Hollywood.”

Don’t Miss: The three remaining film festivals that will be held in the new theater this year: The films of Clint Eastwood, the Advent of Sound and the Civil War on Film.