1. materials characteristic of baseball and the culture of baseball; 2. collectible baseball Americana
1930
The 15-year career of George Sisler, spent mostly with the St. Louis Browns, ends when the Boston Braves release him. A lifetime .340 hitter who twice led the AL with averages above.400, Sisler will be voted into the Baseball Hall of Fame in 1939.
1990
NL batting champion Willie McGee signs as a free agent with the San Francisco Giants, ending his three-month stint across the bay with the Athletics. He finished the season with the A’s following a trade from the Cardinals, but McGee still qualified as the NL batting champion, hitting .335
1928
In the Washington Senators 9-1 win over the St. Louis Browns, Goose Goslin gets two hits for the third day in a row to edge Browns outfielder Heinie Manush .379 to .378 for his only batting title in an 18-year career. 
1955
Detroit Tigers outfielder Al Kaline becomes the youngest batting champ in history, as he takes the American League crown at age twenty with a .340 average. Ty Cobb had also won a batting title at age 20, but Cobb was born on December 18, making him one day older than Kaline when he won.
1980
George Brett has four hits and five RBI in Kansas City’s 8-3 win over Texas, raising his batting average to .401 and extending his hitting streak to 29 consecutive games. The Royals great will finish the season with a .390 batting average.
1990
NL batting champion Willie McGee signs as a free agent with the Giants, ending his three-month stint across the bay with the Oakland Athletics. He finished the season with the A’s following a trade with the Cardinals, but McGee still had enough plate appearances to qualify as the NL batting champion.
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