William S. "Billy" Weinberger (1913-1996) was president of Caesars Palace in the 1960s and 1970s. He was also president of Bally's Park Place casino in Atlantic City, New Jersey in the 1970s and 1980s and ambassador emeritus for the Golden Nugget and the Mirage in Las Vegas in the 1980s and 1990s.
Taken from Variety article found here: "Len Weissman, a Hollywood publicist, photographer and advertising executive, died Saturday following a long struggle with Alzheimer’s disease at his home in Honolulu. He was 83. In the 1930s and ’40s, Weissman and his brother Art (who died in 1995) were freelance fanzine photographers who covered such star nightclub hangouts as Ciro’s, the Mocambo, the Moulin Rouge and the Coconut Grove in pursuit of candid celebrity shots.