Conversation so far:
What did Yip Harburg do on Broadway?
In the 1940s, Yip Harburg wrote a series of book musicals with social messages.
Was Yip Harburg a writer for Finian's Rainbow?
Yip Harburg wrote the book and lyrics for Finian's Rainbow.
What did Yip Harburg do in Hollywood?
Harburg worked with composers Harold Arlen, Vernon Duke, Jerome Kern, Jule Styne, and Burton Lane, and later wrote the lyrics for The Wizard of Oz.
Did Yip Harburg write the lyrics for anything else besides The Wizard of OZ?
Yip Harburg wrote the lyrics for Brother, Can You Spare a Dime?, April in Paris, and It's Only a Paper Moon,

Question: What else is Harburg famous for?
Self-contained rewrite: What else is Yip Harburg famous for besides writing the lyrics for Brother, Can You Spare a Dime?, April in Paris, It's Only a Paper Moon, and The wizard of Oz? ?