Daniel - I found this thing so charming that I continued the search. On page 64 of Stagner's Rock Island Motive Power, 1933-1955, you will find #1522, a Rock Island T-31 class ten-wheeler. It is really close, give or take some piping and the pilot.
I found this thing so charming I blocked out a frame in brass, pressed in some 66" USH drivers, and bolted the live steam cylinders to it. I have a very long way to go before it is presentable - the stroke on the cylinders is shorter than normal O scale crankpin throw, so some serious machining will occur. But in maybe a week I can share a preliminary photo.