Oldster Squash

Wise the middle-aged golfer who learns to cut down his swing to conserve energy. And wise the middle-aged squash player who, speedy in his day, learns a softball style and lets the other fellow slash. Such is the wisdom of Dr. Harold R. Mixsell, hale squash oldster of Manhattan's Princeton Club, that his new softball style is even more baffling than the slam-banging game he used to play. Last week, it won for him, with great ease, his fourth consecutive national veterans' squash championship. Runner-up: William Murray Lee of the Columbia University Club.