Conversation so far:
What did Billie Jean King do during these prime competitive years from 1966 to 1975?
Six of King's Grand Slam singles titles were at Wimbledon, four were at the U.S. Championships/Open, one was at the French Open, and one was at the Australian Championships.
Did Billie Jean King win any tournaments during these prime competitive years from 1966 to 1975?
From 1971 through 1975, she won seven of the ten Grand Slam singles tournaments she played.
What was Billie Jean King's stats during these prime competitive years from 1966 to 1975?
King reached the final of a Grand Slam singles tournament in 16 out of 25 attempts and had a 12–4 win–loss record in those finals.
Did Billie Jean King do any other touraments during these prime competitive years from 1966 to 1975?
King won 97 of her career 129 singles titles during this period and was the runner-up in 36 other tournaments.

Question: What else did billie jean do during this year?
Self-contained rewrite: What else did Billie Jean King do during these prime competitive years from 1966 to 1975?