How are these teams still available?
The 1904-1909 Pittsburgh Pirates
The 1904-1916 Boston Americans/Red Sox
The 1908-1913 Chicago Cubs
The 1901-1922 Cincinnati Reds
The 1908-1923 Detroit Tigers
The 1910-1923 New York Highlanders/Yankees
The 1919-1924 New York Giants
The 1922-1927 Pittsburgh Pirates
The 1914-1929 Philadelphia Athletics
The 1927-1934 St. Louis Cardinals
The 1910-1935 Detroit Tigers
The 1925-1935 Pittsburgh Pirates
The 1930-1936 New York Giants
The 1927-1938 Pittsburgh Pirates
The 1941-1946 St. Louis Cardinals
The 1939-1949 Boston Red Sox
The 1937-1954 New York Giants
The 1926-1956 Cincinnati Reds
The 1948-1958 Boston/Milwaukee Braves
The 1929-1960 Pittsburgh Pirates
The 1951-1956 Cleveland Indians
The 1953-1958 New York Yankees
The 1951-1962 New York/San Francisco Giants
The 1946-1961 Detroit Tigers