First Established Associations By mjfuerstenberg Period: Jan 1, 1898 to Dec 31, 1904 The Originial National Basketball Association Period: Jan 1, 1902 to Dec 31, 1909 Philadelphia Basketball League Period: Jan 1, 1906 to Dec 31, 1912 Central Basketball League Period: Jan 1, 1909 to Dec 31, 1923 Eastern League Period: Jan 1, 1909 to Dec 31, 1912 Hudson River League Period: Jan 1, 1911 to Dec 31, 1917 New York State League Period: Jan 1, 1914 to Dec 31, 1918 Pennsylvania State League Period: Jan 1, 1915 to Dec 31, 1917 Interstate Basketball League Period: Jan 1, 1919 to Dec 31, 1923 New York State League Period: Jan 1, 1919 to Dec 31, 1921 Pennsylvania State League Period: Jan 1, 1919 to Dec 31, 1920 Interstate Basketball League Period: Jan 1, 1921 to Dec 31, 1928 Metropolitan Basketball League Period: Jan 1, 1926 to Dec 31, 1931 the Original American Basketball League Period: Jan 1, 1932 to Dec 31, 1933 Metropolitan Basketball League
