Posted By:
steve kYou may want to contact Paul Lichter who is a good friend of a good friend of mine. Paul is one of the largest dealers of Elvis memorabilia but also is well versed with the Beatles and in fact knew them personally. He has dealt with Beatles autographs which he had gotten signed personally. Whether he is technically an autograph expert I don't know but if not I imagine he could steer you in the right direction.
His website is http://www.elvisunique.com/