Surprisingly, Wikipedia has some good information about Jewish organized crime in America, much of it well sourced. I'm surprised that this has been allowed to remain on Wikipedia since all of the Jewish content of that site is carefully screened by the resident Zioncrats for anything that could possibly tarnish the 'sterling' reputation of 'the chosen.' The following links include general info, a general list, and a very extensive category listing of major Jewish-American mobsters. Some obscure stuff is found here like the "Yiddish Black Hand" gang and the "Shapiro Brothers," plus more.
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http://en.wikipedia.org/wiki/Jewish-...rganized_crime
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http://en.wikipedia.org/wiki/List_of...rican_mobsters
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http://en.wikipedia.org/wiki/Categor...rican_mobsters