American League of Baseball was formed in 1900.
National Baseball Hall of Fame elected its first baseball players in 1936. The people were Walter Johnson, Christy Mathewson, Ty Cobb, Babe Ruth and Honus Wagner. Children could study the biographies of these men. What accomplishments brought them to the Hall of Fame? Children could learn about all the inductees at: http://baseballhall.org/explorer.