The web site that you reference is the one that really messed me up! It does, indeed, have a motif with the lion and the paw on the book. The weird thing is that the lion is facing the other direction, the letters 'B' and 'G' are in the opposite order, and yet they aren't reversed (mirror images). You would think that, whatever the B and G stand for, they would at least appear in the same order.
To solve this puzzle, we're going to need more evidence, or someone who can put some of these ideas to rest.
