Geoff - You may want to take another look at your timeline on the parent site. I cannot find any "proof" in "The Sicilian" that Mike returned in 1950 (as you have listed on the timeline).
Also, FWIW - Lucky Luciano was deported in Feb., 1946 NOT 1945 (as is listed on your timeline).
Yeah, the entire site needs a thorough audit, including the timeline...
I probably got 1950 from Chapter 28 of
The Sicilian (p. 389, paperback): "Maria Lombardo Guiliano was up early that morning of July 5, 1950...." which wasn't long before Michael left, which I'll also guess as being in mid-July, 1950.
Lucky's deportation:
Mea culpa, thanks