I always love it when I get a catalog in the mail from David Morgan! They are probably one of the last whip shops that still send out a physical catalog.
I think every whip maker should at some point have owned a David Morgan whip. They made probably the most well know whip in the world (the Indiana Jones Bullwhip).
They also sell parts for leather goods, for example I bought the plastic D Rings for my non-metal belt that I wear when travelling from them.