A good question it is too Reg, I guess they're waiting for some expert to fill in the gaps or unearth a lost archive, but hey, you're the German around here
!! Maybe just mysterious gaps?
I've often wondered what "One thru Six Up" tasted like, or what properties were lacking in WD-1 thru WD-39 ?? Unlike Heinz 57, which had a logical explanation!
Not an Albatros BTW