American soccer writing, history & data.
| Name | Abbreviation | Years |
|---|---|---|
| American Association Football League | AAFL | 1894-1894 |
| American Association of Professional Football | AAPF | 1894-1894 |
| American League of Professional Football | ALPF | 1894-1894 |
| American Soccer League | ASL | 1921-1929 |
| American Soccer League | ASL | 1929-1983 |
| Eastern Association Football League | EAFL | 1909-1910 |
| Eastern Soccer Conference | ESC | 1964-1965 |
| Eastern Soccer League | ESL | 1928-1931 |
| Lone Star Soccer Alliance | LSSA | 1987-1992 |
| Major Soccer League | MSL | 1978-1992 |
| National Association Football League | NAFL | 1895-1900 |
| National Independent Soccer Association | NISA | 2019-present |
| North American Soccer Football League | NASFL | 1946-1947 |
| North American Soccer League | NASL | 1967-1985 |
| United Soccer League | USL | 1984-1985 |
| Women's Professional Soccer | WPS | 2009-2011 |
| Womens United Soccer Association | WUSA | 2001-2003 |
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