Conversation so far:
What was Bob Feller doing in Bob Feller's later life?
Feller was elected the inaugural president of the Major League Baseball Players' Association in 1956.
What did he do as president of the association?
As president, he appeared before Congress to speak about baseball's reserve clause.

Question: What other things was he doing?
Self-contained rewrite: Aside from president of the Major League Baseball Players' Association, what other things was Bob Feller doing?