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

Stoker : you present an excellent amount of thought and research on the Solar #1.
I hope to not offend , but I humbly state that I do not concur with some of your conclusions.
Foremost, may I point out that there is yet no evidence presented that any such company is now known, or has been known, as Thermal Energy Engines of Phoenix Arizona.
The markings on a metal base stating “Thermal Energy Engines Phoenix Arizona” (note absence word ‘of’ ) do not necessarily mean there was an incorporated company by that name.
A USA registered patent , or trademark, or better yet the essential Arizona business incorporation and associated Phoenix business address would go far in proving such a company existed. The people at the US Internal Revenue Service are quite sensitive in getting taxes paid on even such a thing as a mundane toy engine, and therefore the IRS does insist that a company have contact info and addresses where tax money can be squeezed from said such company.
I have done a superficial search of 1970’s Phoenix census records, 1976-77 Phoenix & Maricopa phone books, and 1975-78 Phoenix business directories and have yet to find any Thermal Energy Engines listed. BUT my search results are very limited by scattered internet databases. It once was a good source of data research to simply call a local Phoenix library to see if they could assist, but the current virus plague has severely limited that route.  You  may have better luck than me, and thus you may yet prove the existence of TEEPA.
For now, at this early research stage , may I suggest the Occam’s Razor research principle “entities should not be multiplied without necessity” ?