Conversation so far:
Why did Woody Guthrie move to California?
During the Dust Bowl period, Woody Guthrie joined the thousands of Okies and others who migrated to California to look for work.
Did Woody Guthrie find work in California?
Woody Guthrie achieved fame with radio partner Maxine Lefty Lou Crissman as a broadcast performer of commercial hillbilly music and traditional folk music.

Question: Who did he work for?
Self-contained rewrite: Who did Woody Guthrie work for at the radio station?