Central Pennsylvania Racing Club in pre war years

[sramoa]

Dear All,

I am looking for info this great big car championship in pre war years.I think operated various names:PCI (Penn-Central Independent) and EIRC (Eastern Independent Racing Club) or Keystone Racing Association

I know its champions:
1935 George Herman
1936 Mark Light
1937 Dave Wilt
1938 Paul Young
1939 Jerry Donmoyer

I am searching for events date and winners list or maybe point standings

THANKS