Try Rock Island Auction, particularly if you are a customer. I have attended most of their auctions and liked their "waterfall racks". They were designed as utilitarian plywood racks which display 8 guns. I asked for and was given their paper patterns. I made a few design changes and used black walnut with a high grade plywood base. Finished with dark amber shellac and urethane. they are extremely strong and very attractive, but heavy. Not a quicky project but worth it.