Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

I have not yet found any info that suggests dates as early as the 60's, but I also have not found anything that would refute that possibility either. As Doug says, there is very little out there to be found on these unique engines! The earliest date I have found was 1975 if I recall correctly, but it couldn't be called an authoritative reference, so even that is up in the air.

Sadly, even with all of Doug's materials, that he so kindly shared with me, I saw no copyright or even print dates to help solve this mystery.

The search goes on .... but what of the original questions I posed?!?!?   ;c)

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