Ted Sullivan on yesterday signed Black and Baldwin, the "kid battery" of the Quincy Club, to play with the Kansas City Unions. This jump will about break up the Quincy Club. "Kid" Baldwin is one of the pluckiest catchers that ever stood behind a bat and will no doubt be valuable acquisition for the Kansas Citys. Last Winter he signed with the St. Louis Unions and accepted $200 advance money, but afterwards signed a second contract with the Quincy Club, which had "reserved" him, and failed to return the advance money. President Lucas says he is glad Sullivan has taken him away from the Quincy's, but Ted will have to settle that $200.-St. Louis Globe-Democrat, July 25, 1884
While Baldwin was born in Kentucky, his family moved to St. Louis when he was still young. He made a name for himself as a ballplayer while playing for various St. Louis amateur clubs, including one of the later incarnations of the Red Stockings.