I was browsing through estate sales and came across this one: https://www.estatesales.net/VA/Arlington/22206/2040459 If you scroll to image 118 you will see some dusty/cobwebbed circuit boards, stored in a wooden "frame". Looks like discrete transistor logic. Also, a resistor sales/storage drawer set for OHMITE "Little Devils" a few pictures before. Bill S. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus