If I might expand a bit on the OP's original question, has JW recorded any albums, film scores or otherwise, with any orchestras other than LA, Boston, or London (besides the ones already mentioned...Lincoln, Saving Private Ryan, etc.)? Where he himself was the conductor? I can only think of two; the first Cinema Serenade album with the Pittsburgh Symphony, and the Star Wars album with the Skywalker Symphony (which I believe was made up of San Francisco-area based musicians). There was also Call of the Champions (along with Hymn to New England) with the Utah Symphony, but the rest of the American Journey album was made up of tracks recorded in LA.
Are there any others I'm not thinking of? (And I'm not including any of the jazz albums from his Johnny Williams days....)