Hello everybody.
Yes, Cali from JCR had several different sources for the wood. Cali was more a welder than a wood worker. I know it because I had the opportunity (and the luck) to have some chats with two persons who worked with Cali. One in his workshop, and one who was his sale rep.
He bought his wood, amongst others, in the Dominican Republic, from an artesan brand called Caribbean Rhythms, if I remember well, till this brand had to shut down. At the time, caoba (mahogany) was already a protected species, so it was impossible to import the lumber/timber (don't know the right word, sorry) in the USA. But it was possible to have some lumber turned on the spot and to import it then.
His rep also told me (not only to me, it was on a forum, but we had a few chats via Messenger) he travelled a lot to source some wood for Cali, for instance in Vietnam, where he hired a woodworker to build some bongó shells out of jackwood. According to him, it's a wood species with the same characteristics as mahogany : colour(s) and density. So he brought some shells from Vietnam.
And I believe some other shells were imported from South America too.
That's all I know, but it can help a little.
I'm looking forward to see your pictures.
Stay safe, everybody.