So is it not possible to sign a yearbook in December?
When it was signed is irrelevant. The signature that was signed is limited to the name Ray or Roy. The Moore is in different colored ink. All that is known from it is that Ray or Roy signed the yearbook. Which Roy or Ray is a matter of conjecture. These two names are not terribly rare. A handwriting expert would tell if the mismatched styles of the Roy and the Moore could constitute an actual signature but the ladies- Nelson and Allred, are unwilling to hazard such inspection.
It is possible but highly unlikely. Most kids have put their yearbook down before summer and it ends up in a box somewhere only to be looked at again years later.
In Beverly's case she got it out and figured she could add the signature that was on her divorce papers, cuz it looked legit, and she then could cash in.