[hilbert42]

I still have well over a dozen of those IBM modules together with their paperwork and circuit diagrams (somewhere in my miles of files).

They've been getting in the way and I've been meaning to chuck them away on many an occasion but something inside me has stopped me doing so because of their possible historical value.

Shirriff's blog has reinforced my thinking, they'll just have to clutter up my place for a little longer methinks.

[kens]

I'd be interested in scanning the drawings if they aren't already scanned. If you want to get rid of the modules, I can set you up with a museum.

[hilbert42]

I've not scanned them, I'd have to find them first and that's not easy at moment because they're among tens of thousands of docs that need sorting (I rarely chuck out docs like that).

How I came by them was by accident when I was helping a guy who was a worse (indiscriminate) hoarder than I am move his tooling and machining factory. He hoarded anything technical, especially electronics stuff.

He didn't know what the circuits were but I did. Despite having little interest in either the modules or circuits instinct made me rescue them (it's a fluke they weren't scrapped). Reason: I once recall hundreds of these modules flooding onto the auction market and no one wanting them except for the tubes so I assumed everyone who'd be interested was already in the know.

The circuits (if I recall correctly—the factory move was in 2012) were together in a big folder a bit too big to scan on a quarto/A4 scanner.

Incidentally, there were stacks of old IBM computer racks that IBM historical people had rescued earlier (presumably the modules were from the same computer) but the modules and circuits surfaced later and never ended up with the rest of the hardware.

I'd be very surprised if others don't possess copies of those folders of circuits (computer historical societies etc.) as at one time those modules were so ubiquitous.

Seeing there's interest I'll hone in on them as I sort through the files (I know roughly what room they're in). The moment I find them I'll put them on line.

In the meantime I'd urge you to seek out copies of those circuit folders. IBM documented everything so well, their manuals were masterpieces of documentation in their own right (unlike the terrible situation of today where tech info on products is as scarce as hen's teeth).

Re museum, I'm in Australia so I'll seek out the mob who took the racks and try to mate the modules with the rest of the H/W. Thanks for the offer.