Conversation so far:
How did Cronkite's career begin?
He entered broadcasting as a radio announcer for WKY in Oklahoma City, Oklahoma.
What else did he do?
Oklahoma.
In 1936, he met his future wife, Mary Elizabeth "Betsy" Maxwell, while working as the sports announcer for KCMO (AM) in Kansas City, Missouri.

Question: Where else did he work?
Self-contained rewrite: In addition to working as a sports announcer for KCMO, where else did Walter Cronkite work?