Event:
Johan Sigismund of Brandenburg becomes protestant
More Notable Events on December 25:
1997 For 1st time U.S. movie box office receipts pass $6 billion
1997 Jerry Seinfeld says this is the final season of his TV show
1974 Cyclone Tracy virtually destroys Darwin, Australia
1939 Montgomery Ward introduces Rudolph the 9th reindeer
1931 New Yorks's Metropolitan Opera broadcasts an entire opera over radio
