Still Looking - Does Anyone in Dallas Know How I Can Find More of the Benanti Collection Xograph Cards?

 I see a few cards on COMC.com and sometimes on ebay that are from the Benanti Collection.  When Beckett graded them they were labeled as such.  I picked up a bunch of these when Beckett Auctions was working with the Benanti family to sell the items.

A Beckett employee let me know that the family had more items for sale, but they didn't continue with Beckett Auctions.  Has anyone seen more of these cards anywhere?

I liked that they offered cards that were one-of-a-king proof cards.  Here are a few that I own.

Here are the mainstream cards of the two proofs from above.  Since I have nothing better to do, I found that the signature location changed from the proof to the released card.  The change was an improvement for the Gehrig card, but I am not convinced that the Williams card is better with the change.

I assume that there are others that have changed, but I haven't seen that many of the proofs.