The 11/70 service manual is all good, but it's definitely not enough. Ideally, you should have access to the full drawings, the service manual for the CPU, the service manual for the memory subsystem, I seem to remember that the FP11 has its own service manual, and I think the massbus interface also has its own documentation set. Also, the memory system consists of both the Unibus map, the cache and memory bus system, and they you have separate documentation for the memory boxes (either MJ11 or MK11 box). It might be worth while to contact the Living Computer Museum. I forget whether they have an 11/70 running or just an 11/45, but I do know that they collect all the documentation they can get for old computers--I saw the room where they store it. Whenever they need to use it, or there's some other need to access it, they try to make time to scan it, so the precious copy can stay in the archive room.

Since their goal is to have ancient computers actually running, they are certainly interested in having all the documents (even if you can't get the wood, as Warren might remark at this point), including full engineering drawings. It's also a neat place to visit if you have some free time in Seattle. I'm disappointed to have figured out that, although I'll be in Seattle for a conference in about a month, I won't be able to visit LCM while they're open unless I skip some conference sessions ... or unless I can convince them to open up specially. Anyone else on this list planning to attend LISA and interested in visiting a museum of old running computers?