Design of a computer
  The control data 6600
  by J.E.Thornton
  foreword by Seymour... of course.
  from 1970

  This book has a complete description of all the components,
including the memory system, and has a full description
and pictures of this exact core stack!

  This book is just *great*. No wonder: Thornton was the engineer
responsible for most of the design of the 6600

  I found it at the MSU library.

  Philippe.