You don’t have to pray for “Rosemary’s Baby,” or fear that your reverence for “The Big Lebowski” is just, like, your opinion man: the 1968 Roman Polanski thriller and Joel and Ethan Coen’s 1998 shaggy-dog comedy noir are two of the 25 movies that have been added to the National Film Registry this year, along with Steven Spielberg’s “Saving Private Ryan,” Howard Hawks’s “Rio Bravo” and Arthur Penn’s “Little Big Man.”

The Library of Congress is to announce on Wednesday that it has selected these films for preservation to “protect a crucial element of American creativity, culture and history,” according to a statement from James H. Billington, the Librarian of Congress. Other movies that were added to the registry this year include “House of Wax,” the 3-D horror film starring Vincent Price; the fantasy “Willy Wonka and the Chocolate Factory,” with Gene Wilder; John Hughes’s comedy “Ferris Bueller’s Day Off,” starring Matthew Broderick as the truant teenager of its title; and “The Power and the Glory,” which was the first produced screenplay of Preston Sturges.

Also selected for preservation were several reels of footage from “Bert Williams Lime Kiln Club Field Day,” a 1913 film that is one of the first to feature a black cast; and the 1986 animated short “Luxo Jr.,” an early effort by Pixar and the first 3-D computer-animated film to be nominated for an Academy Award.