Welcome, Cat, the name Bill Pearl doesn't get mentioned much on the boards, but that is because he was the unofficial King of bodybuilding before Arnold and the IFBB took over. The latter part of his career overlapped the early yrs of the IFBB Mr Olympia shows, but he preferred to remain independent. Prize money and endorsement money wasn't much in the old days, many stars owned a gym, as did Pearl. Many years later he claimed the book you cite was the biggest moneymaker of his career.