On a recent trip to Waushakum Live Steamers in Massachusetts, there was a Yankee Shop/Friends Models 3/4" scale 4-4-2 simmering quietly on the lead track to the steaming bays.
3/4" Scale, 3-1/2" gauge Boston and Maine 4-4-2 Atlantic, designed in 1940 at Yankee Shop
A small, compact live steamer that's got surprising power and speed. One of "Yankee Shop's" more popular designs in the 1940s. Coal fired, Baker valve gear, slide valves dummied to look like piston valves. Copper boiler, 5-1/8" diameter. Easy first time project.
All the sights, sounds, smells, and thrills of "larger gauge". This is the backhead of the 3-1/2" gauge "Yankee Shop" 4-4-2 Atlantic that is shown above.
Richard Symmes runs his Yankee Shop/Friends Models 4-4-2 Atlantic at the track of Charlie Purinton in the 1980s. This particular engine has Walschaert valve gear custom-fitted by the builder; the Baker valve gear is standard on the original Yankee Shop design.
If you're interested in the re-release of "rough castings" for the Yankee Shop/Friends Models 3/4" scale Boston and Maine Atlantic, please make your desires known to me.