George Wright AG-Phono

I have an AG Phono without an instruction manual, does anyone have one that they can scan or email to me? If not what I need to know is which output goes to which output tube? Also what does the switch on top do?.
The switch on top is for 78rpm EQ curve. I'll check to see if I can find a manual.
Thanks. I couldn't remember what it was for and my brother is using it. I had an instruction sheet that I got when I received it from George three years ago and misplaced it. I have been using one of his coppertops most recently.