Keystone League was a Class D league that was based in Pennslvania that played only one year: 1935.
Allentown
Lancaster
Lebanon
Mt Carmel
Pottsville
Pottstown
York
Keystone League was a Class D league that was based in Pennslvania that played only one year: 1935.
Allentown
Lancaster
Lebanon
Mt Carmel
Pottsville
Pottstown
York