Abbey Gardens was for years an important succulent nursery in Los Angeles. They were an early source for some of the Eulophia orchid species now grown by a lot of succulentists.
Abbey Gardens is now closed. Boyce Thompson Arboretum, in Superior, Arizona, about an hours' drive east of Phoenix, bought the remaining plants. Many are now part of the BTA collection, but others will be sold at a special sale on March 5, 2015. You can find details here:
Boyce Thompson Arboretum, Home