[TRIBUNE PROQUEST SEARCH SHOWS VOTE ON UNIFORM BALL WAS DEC 14, NOT DEC 15]
DECEMBER 15, 1933| CHICAGO, ILLINOIS – Major League Baseball owners meeting in Chicago decided on a uniform baseball on this date in 1933. For several years the American League used a more lively ball, but the National League decided to conform.
Contributing sources:
Associated Press, Paul Mikelson, December 16, 1933