You have a copy?
Somewhere around here, under six thousand other things in the basement - I haven't seen it in a couple of years, so that's where I assume it to be. I may have a revelation otherwise later, though ;)
I did a quick lookup of the exact title - it's "Faith and Political Philosophy: The Correspondence Between Leo Strauss and Eric Voegelin, 1934-1964", Peter Emberley and Barry Cooper, eds. Ted McAllister's book on Voegelin and Strauss is worthwhile, too, but I don't have a copy of that one.
Anyway, it's worth checking out, even if you're not a Straussian - Strauss's critiques of Voegelin are right on target, IMO...