Conversation so far:
When did Bill Cosby start stand up comedy?
Bill Cosby appeared at The Gaslight Cafe beginning in 1961.
Where was Bill Cosby doing stand up comedies?
Bill Cosby lined up stand-up jobs at clubs in Philadelphia and then in New York City.
Where did Bill Cosby perform while in New York?
Bill Cosby performed at The Gaslight Cafe
Did Bill Cosby perform in other cities or states besides philadelphia and new york?
Bill Cosby booked dates in cities such as Chicago, Las Vegas, San Francisco, and Washington, D.C.

Question: Did he perform on TV?
Self-contained rewrite: Did Bill Cosby perform on TV?