Early Pennsylvania American football teams 1890–1945 | |
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Western Pennsylvania Professional Football Circuit (1890–1900) | |
National Football League (1902) | |
1903–1921 | |
Anthracite League (1924) | |
Eastern League of Professional Football (1926) | |
AFL I (1926) | |
AFL II (1936) | |
Early NFL (1921–1930) | |
Wartime NFL (1941–1945) |