League Abbrev
From NSB User Guide
League Abbreviations
- AL - American League (1901-Present)
- NL - National League (1876-Present)
- NA - National Association (1871-1875)
- AA - American Association (1882-1891)
- UA - Union Association (1884-1884)
- PL - Player's League (1890-1890)
- FL - Federal League (1914-1915)
- NN1 - Negro National League I (1920-1931)
- NN2 - National League II (1933-1948)
- NAL - Negro American League (1937-1948)
- ECL - Eastern Colored League (1923-1928)
- NSL - Negro Southern League (1932)
- EWL - East West League (1932)
- ANL - American Negro League (1929)
