Yeah, Ben, Maynard is all over this soundtrack (as is Frank Rosolino), and he gets liner note credit, as well.  The CD re-issue pairs Dino with another great soundtrack that MF also played on, though not as a featured soloist, Crime In The Streets.  Oddly, there is no credit for Maynard on the Franz Waxman soundtrack, but Buddy Bregman confirmed MF's participation in some correspondence.  They are both great scores and well worth owning.  Let me know what you think when you get your CD.