Bob Stewart, who is credited with creating such beloved and long-running television game shows as To Tell The Truth, The Price Is Right, Password, and Pyramid, passed away Friday at Cedars-Sinai Medical Center in Los Angeles of natural causes. He was 91.

Born Isidore Steinberg in Brooklyn to Russian immigrants, Stewart changed his name after being shunned by the television industry due to his Jewish heritage

A chance encounter with Monty Hall in 1956 led to a meeting with game show pioneer Mark Goodson, who hired Stewart and gave him the platform through which he went on to create The Price Is Right — recently named the "greatest game show of all time" by TV Guide.

Stewart went on to introduce two more hit shows through Goodson-Todman, namely To Tell the Truth and Password.

He left Goodson-Todman in 1964 to start his own Bob Stewart Productions. After a few small-time successes, Stewart once again made his mark with Pyramid (then called The $10,000 Pyramid). A significant portion of the credit for the show's enduring popularity is due to its most memorable host, the late Dick Clark.

Stewart retired from the game show biz in 1991, leaving operations in the hands of his son Sande, who went on to create a few of his own game shows, including Your Number's Up, which appeared opposite his dad's Pyramid on NBC.

In addition to Sande, Stewart is also survived by sons Barry and David, two grandchildren, and two great-grandchildren.

[screengrab via Wikipedia]