I still have a copy of the original Ada MIL spec.
I'm sad I also purged my DECSystem-10 "Orange Book". I've never been able to find a replacement anywhere.
If it's actually "phone book", then [1] seems promising.
[0] http://www.columbia.edu/cu/computinghistory/pdp10stuff/
[1] http://www.bitsavers.org/pdf/dec/pdp10/TOPS10/1972_PDP-10_Us...
A marvelous find, thanks! I'm glad they haven't all vanished. I'd still like a scan pdf!