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
Castor and Pollux from Sparta, at a shrine known as the "Meneláeion" where Helen, Menelaus, Castor and Pollux were all said to be buried. Castor himself was also venerated in the region of Kastoria in northern Greece. They were commemorated both as gods on Olympus worthy of holocaust, and as deceased mortals in Hades, whose spirits had to be propitiated by libations. Lesser shrines to Castor, Pollux and Helen were also established at a number of other locations around Sparta. The pear tree was regarded by the Spartans as sacred to Castor and Pollux, and images of the twins were hung in its