From the lurker (we really need a new term for this, its sounds creepy):
"Regarding the mention in that article of bungalows with lockers, baths and necessary facilities, that might refer to what was commonly known in those types of clubs as "bath houses" or even "cabanas." Out there in the prominent old clubs on Long Island, also clubs in Palm Beach, the Bahamas etc, etc, they were very common and actually a rather generic design-----they are basically little white huts that are about ten feet wide and maybe twenty feet deep. In the front they generally have an awning off the structure with lounge chairs under it, and behind that a little hut structure that can contain a sitting room, toilets/changing rooms and showers. In clubs like Maidstone, the famous old Beach Club of Southamption, the beach clubs of the Creek Club and Piping Rock, the Bath and Tennis Club in Palm Beach and Delray etc, etc, these little structures sit side by side and can go on for maybe 50 to 75 yards (although at Maidstone's Beach Clubs their configurations and placements are quite different). They are all generally identical and are lined up perfectly perpendicular to the shore line. Members generally are said to own them individually, but in reality the club owns the land and the members basically rent them from the club annually and in some cases even for generations."