logic rack?

I got a call from a scrap place today and I made a quick trip out to see what they had before the hurricane hits (it's due to cross DIRECTLY over the place's location so I don't expect the stuff to be there come Sunday AM since most of the stuff is out in the open). Got some DEC core memory so the trip was worth it. One of the things that I found was a "Logic Rack" made by (somebody) Research & (something). Sorry to be vague about the name but I was in a hell of a rush. Anyway it said that they were a division of XEBEC. The rack was ABOUT 8" or 10" thick and ABOUT 32" wide and ABOUT seven foot tall and had HUNDREDS of small circuit cards that plugged into it. None of the ones that I saw had ICs, just glass diodes, trqnsistors and resistors. The cards are 4" long and 2 3/16" wide with a 16 position CINCH contact on one end. The transistors that I looked at were all date coded 1969 but I saw what looked like it might have been a date on the rack that said 1973. Anybody know what this is? Joe