This page is also quite useful:
http://www.pinballenthusiast.com/WPC_CPU/
A friend bought an unstuffed WPC CPU board from Gene Cunningham years ago, and shot some photos
Those pictures are very good and I applaud anyone who is trying to preserve pins and assist other enthusiasts.................BUT!!!!!!
I downloaded the pictures and spent 30 mins trying to piece them together - when I found they are ALL different sizes - they are ALL at different angles with respect to square AND there are MANY MANY parts of the board missing.
It would be nice if he took a single - very hi res picture.......or a couple, BUT at least of the ENTIRE board.
maybe you can pass that on to him since he has a blank board