Help finding lightspeed schematics for 2009 green PCB

I recently received a "bonus" PCB and set of matched LDRs with a purchase of an amp here at the swap meet.

The PCB is green and dated 2009, designed by Uriah Dailey.

I tried to contact Uriah but haven't been successful to date.

I was wondering if anybody had a schematic for this PCB, it is not very intuitive. Maybe some assistance with the resistor placement and any other details about completing this PCB would be very helpful.