Holway, John B. "Not All Stars Were White."

Sporting News (July 4, 1983): S14. Holway talks about the Negro leagues' 1933 All-Star Game, played in Chicago in August, in which Gibson represented the Pittsburgh Crawfords.

"Negro Leagues Register." In The Baseball Encyclopedia. Ninth edition. Edited by Rick Wolff, et al. New York: Macmillan, 1993, pp. 2609-2680. Although far from a complete listing of all Negro leaguers, this has the most authoritative statistics for many of the stars of the Negro leagues.