The brothers Warner were named Harry, Albert, Sam and Jack. Quick: How many other siblings did they have? What was their family name before they emigrated to the U.S.? Did you know that Jack L. Warner, who was famous for his outrageous sense of humor, once told Albert Einstein he had a theory of relativity, too? "Don't hire them!"

American Film magazine’s February issue celebrates Warner Bros.’ 90th anniversary by compiling a list of 90 little-known facts about the studio. We think it’s pretty cool and you will, too.