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 vow "(votum)" made by Aulus Postumius Albus Regillensis in gratitude at the Roman victory in the Battle of Lake Regillus in 495 BC. The establishing of the temple may also be a form of "evocatio", the transferral of a tutelary deity from a defeated town to Rome, where cult would be offered in exchange for favor. According to legend, the twins fought at the head of the Roman army and subsequently brought news of the victory back to Rome. The Locrians of Magna Graecia had attributed their success at a legendary battle on the banks of the Sagras to the