I can't seem to get a straight story about who these came from! I've read 3 or 4 different accounts saying they originated from different mycologists, including Mr. G, SporePod and even Steven Pollock! These have been an absolute gem in my library in the past, taking on the amazing traits of Golden Teacher and B+, but at some point along the way, I mistakenly gave away my master sample and was out of stock for a couple years. 

Fast forward to earlier this year...I was helping a friend move and he handed me a few old syringes he had in storage. Golden Mammoth was one of them, but unfortunately was the only syringe that had a green tint in the syringe (never a good sign). I sent it to a close friend who revived the genetics on agar and on the first attempt, from an unrefrigerated green syringe dated "2020", had a beautiful first flush! I shall not let this run empty again! It's too good.