February 5 - Barney Dreyfuss , 66, owner of the Pittsburgh Pirates since 1900 who was principal force in creation of the World Series; Pirates won six NL pennants and two World Series (1909, 1925) under his leadership; built Forbes Field, first modern steel and concrete stadium, in 1909
March 23 - Charles F. Daniels , 83, one of the NL's original 1876 umpires; career of 25 years included ten major league seasons
April 2 - Honest John Morrill , 79, first baseman and manager of Boston's 1883 NL champions who batted .300 twice and was among first ten players to reach 1000 hits
April 10 - Fred Pfeffer , 72, second baseman for Chicago and Louisville who in 1884 was one of first players to hit 20 home runs; led league in putouts nine times and double plays seven times
April 23 - Lon Knight , 78, right fielder and manager of Philadelphia's 1883 American Association champions
August 2 - Dan Brouthers , 74, first baseman who was 19th century's greatest slugger, winning five batting titles and retiring with a .342 lifetime average; .519 career slugging percentage was record until 1920s, led NL in HRs twice and doubles three times; third player to hit 100 home runs and fourth to reach 2000 hits; batted .338 with league-leading 153 runs for 1887 Detroit champions
