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
The Rape of the Daughters of Leucippus The Rape of the Daughters of Leucippus The Rape of the Daughters of Leucippus is a 1618 painting by Peter Paul Rubens. It is now on show in the Alte Pinakothek in Munich. The painting depicts the mortal Castor and the immortal Pollux abducting Phoebe and Hilaeira, daughters of Leucippus of Messenia. Castor the horse-tamer is recognisable from his armour, whilst Pollux the boxer is shown with a bare and free upper body. They are also distinguished by their horses—Castor's is well-behaved and supported by a putto, whereas Pollux's is rearing. The putto's black wing shows the twins' ultimate fate.