An acquaintance near here says he has some Tektronix gear that used to belong to his deceased father, who formerly worked for Burroughs. He sent me some photos of what he could get to easily, but that only included a Tek 453, a DeVRY Technical Institute scope (sounds like a kit built as part of an electronics correspondence course) and two old analog VOMs, which I can't identify.
I gather that there are some Tek plugins of some kind buried farther out of reach, but I don't know what might be there. I'll keep on him for more info.
The condition is dirty, and otherwise unknown, so the price is likely to be cheap, or less. He would just like to find them a good home.
I will continue to bug him for more info on the other parts, but in the meantime if there's anyone in this area that's interested, let me know. I can send photos and put you in contact with the owner.