[Looking4] Wykoff's dvds

Does anyone here have contact on Gerald L.Wykoff - or
whoever might be currently managing his business that they would be
willing to share with me? It seems that his websites and business
have closed… and there is no response. I am trying to find copies
of several of his CDs or DVDs for members of a nearby lapidary club.
Especially #1 & #20. If anyone knows where thes might be available or
owns and wants sell these titles please contact me offline