I dug up a couple more spare PDP-11 references.
These are both small "paperback" books:
MICRO/PDP-11 Handbook, 1983-1984. EB 24944 18/83.
Microsystems Handbook (1985). EB 26085-41/85 04 04/43.
I'd give priority on a trade for a "recent" (~1985-86) Unibus
peripherals handbook (for 11/24, 11/44, 11/84 peripherals).
But let me know even if you don't have anything to trade.
Dave Jenner
djenner(a)halcyon.com