Morris Kleinman was a part-owner of the Desert Inn hotel and casino in Las Vegas, Nevada, along with his business partners Moe Dalitz and Ruby Kolod. Before Kleinman and Dalitz relocated in Vegas in 1949, they were members of the Mayfield Road Gang in Cleveland, Ohio.
Schwartz, David G. Roll the Bones: The History of Gambling. Casino Edition. Las Vegas: Winchester Books, 2013.