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To discourage "colored" people from using the Thomas Jefferson Pool, Moses, as he had done so successfully at Jones Beach, employed only white lifeguards and attendants. But he was afraid that such "flagging" might not be a sufficient deterrent to mothers and fathers from the teeming Spanish Harlem tenements who would be aware on a stifling August Sunday that cool water in which their children could play was only a few blocks away. So he took another precaution.
Corporation Counsel Windels was astonished at its simplicity. "We [Moses and I] were driving around Harlem one afternoon—he was showing me something or other—and I said, 'Don't you have this problem with the Negroes overrunning you?' He said, 'Well, they don't like cold water and we've found that that helps.' " And then, Windels says, Moses told him confidentially that while heating plants at the other swimming pools kept the water at a comfortable seventy degrees, at the Thomas Jefferson Pool, the water was left unheated, so that its temperature, while not cold enough to bother white swimmers, would deter any "colored" people who happened to enter it once from returning.
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