Conversation so far:
What is an example of Robert Crumb's early work?
His first job, in 1962, was drawing novelty greeting cards for American Greetings in Cleveland, Ohio.
How long did Robert Crumb work at American Greetings?
He stayed with the company for four years.
Did Robert Crumb like his job at American Greetings?
Dissatisfied with greeting card work, he tried to sell cartoons to comic book companies, who showed little interest in his work.
What job did Robert Crumb do after he left American Greetings?
Crumb briefly illustrated bubblegum cards for Topps before returning to Cleveland and American Greetings.

Question: Was he successful at first?
Self-contained rewrite: Was Robert Crumb successful at first?