John F. Kennedy used to spend his early summers here, too.View of the beach from Nantasket Beach Resort.Credit: Nantasket Beach ResortStroll along the three-mile stretch of Nantasket Beach where a young John F. Kennedy used to spend his earliest summers.Ride the 1928 Paragon Carousel, a rare, hand-carved, four-row antique—one of only 18 created by the Philadelphia Toboggan Company.Visit the Hull Lifesaving Museum, located in the first federally …