<P> The first line is the formation of the National League in 1876, and the second is the transformation of the American League to a major league in 1901 . The third line is the beginning of the expansion era in 1961 . </P> <P> World Series Championships are shown with a "*", National League Pennants before the World Series are shown with a "^", and American League Pennants before the World Series "#". No World Series was played in 1904, so the pennant winners for each league are indicated . Due to the 1994 - 95 Major League Baseball strike, there were no pennant winners or World Series in 1994, so this year is left blank . </P>

List of all major league baseball teams in history