I am grateful for the advice and help of: Robert Cademy, John Carroll, Howard L. Davidson, Bob Fleming, Leonard Foner, Michael Gannis, Jay R. Hill, Eric Hughes, Sharon Jarvis, Yoji Kondo, Cherie Kushner, Tim May, Keith Mayers, Mary Q. Smith, and Joan D. Vinge.
I am very grateful to James Frenkel for the wonderful job of editing he has done with this book and for his timely insight on problems with the earlier drafts.