Some references provide statistics based on a different time periods. For example, in his book, Shades of Glory (2006), Lawrence D. Hogan lists Charleston's career batting average for Negro league play between 1920 and 1941 was .348, with a slugging average of .576. See Lawrence D. Hogan (2006). Shades of Glory. Washington, D.C.: National Geographic Society. p. 385. ISBN9781426200335. Baseball historian John Holway reported in his book, Blackball Stars (1988), that between 1915 and 1936 Charleston's batting average against white major leaguers was .318 and included eleven home runs in fifty-three games. See Holway, p. 124.
The statistics on the National Baseball Hall of Fame and Museum's website as of March 6, 2018, are based on research that the Negro Leagues Researchers and Authors Group conducted for the years 1920 to 1948. See "Oscar Charleston". National Baseball Hall of Fame and Museum. Retrieved March 6, 2018.
