Conversation so far:
who played the dad on my three sons
In 1960, Fred MacMurray turned to television in the role of Steve Douglas, the widowed patriarch on My Three Sons.
how long did my three sons run
My Three Sons was broadcast from September 29, 1960 through April 13, 1972.

Question: what was fred's most notable role
Self-contained rewrite: What was Fred MacMurray most notable role?