Conversation so far:
Where was Harry Wright born?
Harry Wright was born in Sheffield, England.
When was Harry Wright born?
Harry Wright was born on January 10, 1835.
What year did Harry Wright start playing baseball?
Harry Wright was 22 when the National Association of Base Ball Players convened for the first time in 1857, at which time he joined the Knickerbocker Base Ball Club.

Question: When did he retire?
Self-contained rewrite: When did Harry Wright retire?