[Heathkit] Research help - A little off topic

[wa7zze at gmail.com]

Hi, everyone. 

I’m working on an article for the AWA and I need a little research help. I’ve got a couple of blind spots in my collection of old equipment catalogs maybe you can fill in. 

Specifically, I am looking for Radio’s Master catalogs with copyright dates of 1939, 40, 41, and 42. Any of these would be helpful.  

Otherwise, any kind of radio catalogs with these dates might also be useful. 

What I am looking for is the first occurrence of the Simpson “Microtesters.”

Thanks for any help. 

Best,

Chuck / WA7ZZE 

"Remain open to the possibility of the fantastic." -- Terry Hansen