In the latest NG&SLG is an advert for a “Buffalo Shay” from Missouri Locomotive Works in F scale (1:20.3.) This is the cutest little 3-truck shay you can imagine. Only 2 cylinders - apparently Lima only made 2 of them. No pic on their website yet, but I found this online:

Shaylocomotives.com says of Shop Number 119: “Carter Caves & Olive Hill RR #119 “BUFFALO”, Carter Caves, KY”. Hence the Buffalo Shay, I guess.
Edit: I googled Carter Caves & Olive Hill RR and found the book:

http://www.amazon.com/Carter-Caves-Olive-Railroad-1884/dp/1931672350
Anyone know anything else about it? I want one!
Definitely a unique design with a shared bunker and t-boiler, 2 cylinder design. I kicked around building it when I built my 10 ton contractors shay years back, but it got buried in the ongrowing list hahaha I look forward to seeing the prototype model listed