Who and where in Suffolk was there a presence? Did it go past Patchogue? Bellport or Shirley? What rackets controlled by what family? Seems like a lot of money out there no one tried getting a piece? I suspect the trash industry and maybe sea food?
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And as far as rackets operated? From the late 1950s the Colombo's had a near lock on garbage collection, restaurants and bars, trucking, labor unions, and most other legit businesses one could imagine.
Rackets? Horse and sports bookmaking, as well as several small policy-number rings running in the black areas like Riverhead (run by Rocco Prisco), Freeport, etc. They were huge into shylocking. Truck hijacking and major jewelry and diamond heists, labor union extortion, business infiltration and bankruptcy frauds, etc.
The FULL county of Nassau (west, east, north shore, south shore) and mostly Western Suffolk at first. By the mid-1970s eventually Mid-Suffolk - both on the North and South Shore as well. As stated earlier only the East End, with the exception of Riverhead didn't have a big mob presence. For obvious reasons. No "action"
The policy rackets were the one particular gambling racket that although out on LI was still mostly governed by Jimmy Nap of the Genovese. Nick the Battler of the Bonanno's also held a piece of a numbers bank in the Babylon section on the South Shore.