| Federally Aligned Baseball Leagues | MLB | 1876-1961 | |
| Border Association | MLB | 1882-1891 | |
| Dixie League | AA | 1884-1961 | Federally Aligned Baseball Leagues |
| Century League | AAA | 1884-1961 | Federally Aligned Baseball Leagues |
| Peerless League | MLB | 1890-1891 | |
| Eastern Association | AA | 1897-1961 | Federally Aligned Baseball Leagues |
| Great Western League | AAA | 1904-1961 | Federally Aligned Baseball Leagues |
| Heartland League | A | 1904-1961 | Federally Aligned Baseball Leagues |
| Union League | AAA | 1906-1961 | Federally Aligned Baseball Leagues |
| Middle Atlantic League | A | 1907-1961 | Federally Aligned Baseball Leagues |
| High School Baseball | HS | 1910-1933 | Federally Aligned Baseball Leagues |
| Collegiate Baseball | COL | 1910-1933 | Federally Aligned Baseball Leagues |
| Southeastern League | B | 1925-1961 | Federally Aligned Baseball Leagues |
| C-O-W League | B | 1925-1961 | Federally Aligned Baseball Leagues |
| Lone Star Association | AA | 1929-1961 | Federally Aligned Baseball Leagues |
| Gulf States League | C | 1929-1961 | Federally Aligned Baseball Leagues |
| Western Baseball League | A | 1929-1961 | Federally Aligned Baseball Leagues |
| Upper Mississippi Valley Association | C | 1929-1961 | Federally Aligned Baseball Leagues |
| Japanese Baseball Association | INT | 1938-1949 | |
| Transborder Association | A | 1946-1949 | Great Western League |
| Baseball Association of Nippon | INT | 1950-1961 | |
