Douglas Darden laughter was the laughter of three young girls, who were, in essence, their clients: the fourteen year-old twins, Cass and Polly, and their nineteen-year-old friend, Helen. Cass and Polly are most likely feminized renderings of the celestial twins of Greek mythology, Castor and Pollux (better known as Gemini), and their sister, Helen of Troy. Many of his original sketches and drawings for Oxygen House are now owned by the Museum of Modern Art, along with a select few of "Sex Shop" drawings; gifts of Darden's widow. The remainder of his drawings are held at the Avery Architectural and Fine Arts
Depictions of nudity by Castor and Pollux. Leucippus, son of Gorgophone and Perieres, was the father of Phoebe and Hilaeira, and also of Arsinoe, mother (in some versions of the myth) of Asclepius, and Eriopis (daughter by Apollo) by his wife Philodice, daughter of Inachus. Castor and Pollux abducted and married Phoebe and Hilaeira, the daughters of Leucippus. In return, Idas and Lynceus, nephews of Leucippus and rival suitors, killed Castor. Polydeuces was granted immortality by Zeus, and further persuaded Zeus to share his gift with Castor. A myth is a sacred narrative explaining how the world and humankind assumed their present form.