As far as military surplus electronics goes, the
end-all and be-all will
always be Fair Radio Sales of Lima, OH. They're even on the web now:
http://alpha.wcoil.com/~fairadio/
I have been there a couple of times, and while it is Mecca for the vintage
(especially military) radio collectors, they have very little computer
stuff.
William Donzelli
william(a)ans.net