William Donzelli was the first to respond, so he's getting the paper copy.
Since a number of other folks were interested, I went ahead and scanned it:
http://alexeyt.freeshell.org/CDC-8528-reference-manual.tgz
It's 300 DPI grayscale TIFFs in the tar file. I would appreciate it if
someone would mirror it somewhere more permanent.
Alexey