Date: Mon, 30 Jul 2012 09:43:31 -0700 From: "Chuck Guzis" <cclist at sydex.com> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: Re: IBM 7090 mainframe! Message-ID: <50165743.1836.50913E at cclist.sydex.com> Content-Type: text/plain; charset=US-ASCII On 28 Jul 2012 at 14:51, Peter Van Peborgh wrote: I think a real find would be a can of 7090 core oil. Wow, I think any of this gear would be very unlikely to have been saved. I know Washington University had some SAGE pieces in a warehouse, but I haven't seen any 7090-vintage stuff in ANY museum collection. It is kind of a big hole in their collections. The tube stuff all went in the dumpster as soon as transistor and core memory came in, and the early transistor machines had an even shorter life than most computer generations. Hmmmm, now that I think of it, I think WU also had a 7094 memory unit - all tubes, kind of in the transition between tube and transistor. I remember it because an address wire had burned up and somebody had threaded a wire through all the burned places to get it running again. A horrible kluge job, too. Hmm, that one was not oil-cooled, but maybe the damage I saw was WHY they went to oil cooling. Jon