Here is a picture of an Advance Portable Engine on Abell Patent Boiler which I saw at the 1949 Minnesota State Fair.
Like Bob, my main interest is in steam traction engines, but I am also keen on all early agricultural implements, and propose to write to you about these, since steam is a bit forgotten here at present. However, some of us are starting a new South African
Here is a picture of my Case Engine with George Williams onatthe throttle and Harry Rockman standing beside the engine.
60 HP Reeves Simple, Canadian Special, No. 7904, High Wheeler.