James,

One of the better books is:

"The Standard Directory of Proof Marks"

by Gerhard Wirnsberger [translated by R.A. Steindler]

As you might imagine by the title, it covers virtually all the areas you are having difficulty with. My copy is softbound & was under $20 when I purchased it some years ago. It was distributed by Publishers Blacksmith Corp. in Chino Valley, AZ 86323

Their toll free number listed was 1-800-531-2665. I have no idea if it is still valid, but you might try it.

kind regards, tw