Once we hear who the 4th one is, I'll add it to the Canadian orchid search engine.
The 4th is Jacamar Orchids, it is a "small" seller and I don't know of he could provide enough plants of the same species (how many canadian are in the project ?), but he is a member of the OB (jacamarorchids). Untitled Document
He doesn't have all the species mentioned on his website, but we can email him to ask... I got my Max sophronitis, Schoenorchis fragrans from him and he has nice Bulbos.