That's the one - it's gorgeous. The detail she went into is just amazing. Put aside a lot of time for it, though - it's HUGE and the print in the PB edition is ant-size small.

PE - Public Enemies of course and Purvis' son's book Vendetta. And Purvis' book American Agent - I got lucky and found a pretty battered copy on Amazon awhile back. There was also one called Dillinger's Wild Ride that was pretty good.