Thank you very much, Carolyn. I have purchased most of the Livingston varieties from Mike and are growing them right now (63 plants worth) in addition to my Burpee Romas.
I've been reading a lot of old gardening books from the late 1800s and as you know, Acme was not only one of the standard tomatoes of that era, but a popular tomato which created a couple of sports and a popular sort to breed with.
Naturally I wondered what happened to this purple variety so I thought I would post what I found in my readings. I did find a 3rd source whose findings mirrored Mr White's findings that Acme mutates to another variety (unsure if it's a parent or a new variety).
At least we're reasonably sure what happened to Acme and why it became extinct. At least it didn't become extinct because it was a bad tomato.
