This history was written by my friend Bill Butler, who emailed me this:
You mentioned he was in Spain in the mid-1950s to help with the basing of
strategic forces there. I used to be the historian for the organization that
conducted that mission, although in 2003 it was located in Italy (having moved
from Spain in 1992). I put together a short history during its 50th
anniversary in 2004, as attached. Thought you might be interested since your
father participated in a lot of that early effort. The histories for that
organization are at Maxwell too.