I've been with the California Rare Fruit Growers (CRFG), Santa Clara Valley Chapter, for possibly 10 years now (I simply don't remember). I am a Certified Master Gardener prodigal (didn't complete my required community hours - had to work!) who bought beautiful land in the Santa Cruz Mountains (named it Meadowood) who needed to know what kinds of fruit trees would grow there, and thus (I'll always blame Sini for this) I was referred to the CRFG group.
Now, I suspect EVERY group has its fanatics, but I have now been on a rescue mission to a San Diego white sapote orchard, have helped to develop new strains of peaches and nectarines, have one apple tree with about 30 different varieties grafted to it, and have no less than 60 rare fruit trees at Meadowood. And I know a select group of people who know how to find practically any kind of rare fruit you could want to grow, and a couple who know how to graft ANYTHING, and with high success rates.
Once I have completed my inventory, I'll post it here. But in summary, I have white sapote, avocado, plum, peach, nectarine, fig, pear, apple, grape, persimmon, apricot, several kinds of citrus, and cherry trees either at Meadowood or here in Sunnyvale, many of them not yet fruiting. One day they will all be of bearing age, and it will be Catie, bar the door.