Last issue's mystery engine clearly threw our readers for a loop, with not one response coming in to identify the engine.
If memory serves, it's the first time that's happened. We don't know what the engine is, either, so if anyone out there has a clue as to the engine's make, we'd love to hear from them. We should note that it's very possible it was a home-built unit, which would explain the lack of response from readers.
This issue's mystery engine comes, as usual, courtesy of John Spalding, 112 Carriage Place, Hendersonville, TN 37075 (email@example.com).
As ever, the first person to correctly identify the engine, by mail, gets a free copy of Prof. PS. Rose's Steam Engine Guide.