Conversation so far:
What was Jodie Foster's first role?
Foster's career began with an appearance as the Coppertone girl in a television advertisement in 1965, when she was three years old.
What year was Jodie Foster the Coppertone girl?
Foster's career began with an appearance as the Coppertone girl in a television advertisement in 1965, when she was three years old.
What was Jodie Foster's next appearance after the Coppertone girl?
In 1968 Foster had a minor appearance in the sitcom Mayberry R.F.D., in which her brother starred.

Question: What year was her appearance on Mayberry?
Self-contained rewrite: What year was Jodie Foster's appearance by Mayberry?