Here's an excerpt from a report on the Kefauver hearings, which includes a couple of the clubs that you mentioned. Virgil Peterson, of the Chicago Crime Commission, was asked to summarize his information on various people; this is what was read to Moe Dalitz (also referred to as Moe Davis):

"Moe Davis has been closely associated in gambling enterprises in the Cleveland area for many years with Maurice Kleinman, Lou Rothkopf alias Lou Roddy alias Lou Rhody, Thomas Jefferson McGinty, and others. Rothkopf, Kleinman, and Davis maintained a suite in the Hollenden Hotel, Cleveland, for many years. Members of this group have been in association with some of the biggest racketeers from the east coast to the West. They have maintained contact, for example, with Abner "Longie" Zwillman, of New Jersey, and it is known that Lou Rothkopf was in very close contact with Mickey Cohen and Jack Dragna, notorious west coast gambling racketeers.

In the late 1930's a series of lawsuits was flied against Maurice Kleinman, Moe Davis, Louis Rothkopf, and Thomas Jefferson McGinty, who were named as operators of gambling joints known as the Thomas Club, the Arrow Club, which subsequently became known as the Pettibone Club.

In the early 1930's Kleinman, Rothkopf, and Davis were partners in a front for a gambling operation called the Prospect Advertising Co.

On February 3, 1931, William E. Potter, a Cleveland City councilman, was slain in one of the most sensational crimes ever committed in Cleveland. The most logical suspect insofar as the murder was concerned was one "Pittsburgh" Hymie Martin. Moe Davis and Lou Rothkopf were with "Pittsburgh" Hymie until a few hours before the slaying. Davis was also with Hymie until an hour prior to the arrest of Hymie, who was charged with the murder of Potter. Pittsburgh Hymie was tried for this murder and was convicted. He won a retrial, however, and was acquitted. It was alleged that Potter had been killed because it was feared that he was about to expose some crooked deals.

The police had traced checks written by a city official to the Prospect Advertising Co., operated by Moe Davis and Morris Kleinman.

In recent years Davis, Kleinman, and Rothkopf have been connected with the operation of the Mound Club, the Pettibone Club, the Jungle Inn, located near Youngstown, Ohio, the Beverly Hills Club, and the Lookout House near Cincinnati.

It is known, of course, that Thomas Jefferson McGinity has been an important figure in the operation of the Mound Club. Several years ago it was alleged that Moe Davis was then connected with a gang which was known as the Mayfield Road gang."

Here's a link to the article: http://www.nevadaobserver.com/Reading%20Room%20Documents/Kefauver%20Committee%20-%20Testimony%20of%20Morris%20Dalitz%20(1950).htm

Thanks again Gene!!