Conversation so far:
What did Raymond Burr do on the radio?
Working steadily in radio since the 1940s, often uncredited, Raymond Burr was a leading player on the West Coast.
How much did Raymond Burr make?
Raymond Burr earned a steady and comfortable income.
What was Raymond Burr most known for?
Raymond Burr played romantic leads and menacing villains with equal authority
Did Raymond Burr ever win any awards?
Raymond Burr won Emmy Awards for acting in 1959 and 1961 for the role of Perry Mason
What else interesting happened to Raymond Burr during this time?
In 1956 Raymond Burr was the star of CBS Radio's Fort Laramie
What was the name of the show?
Fort Laramie

Question: When did he leave radio?
Self-contained rewrite: When did Raymond Burr leave radio?