I know I posted once upon a time who the founders of SEMA were (Founded 1963) ( thanks Tom! )

Isky, Vic Jr, Moon, Weiand, Hedman, Schiefer, etc

I wonder, how many are still alive? 

The SEMA acronym originally stood for Speed Equipment Manufacturing Association.

In 1970, government regulations became an issue and the name was changed to Specialty Equipment Market Association to improve the overall image of the association

The first SEMA Show was held in 1967 in the basement of the Dodger Stadium in Los Angeles, and there were 5 cars on display, including a 1967 Ford GT40 in the Shelby America booth and a drag-race-prepped Dodge Dart.

https://en.wikipedia.org/wiki/SEMA_(association)