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Hershey Felder as Irving Berlin. (Courtesy of Eighty-Eight Entertainment)

14 Things You Might Not Know About Irving Berlin

“Hershey Felder as Irving Berlin” returns to Chicago’s Royal George Theatre this week. Pianist and actor Hershey Felder joins us in conversation and performance to demonstrate the timeless appeal of the great American songwriter. 

It's not often you can see a letter written by George Washington, a limited edition Barbie doll and Groucho Marx's autograph -- all in one place. Eddie Arruza visits a new exhibit at the Northwestern University library.