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
Leda and the Swan (Peter Paul Rubens) she is most known for giving birth to Clytemnestra, Helen, Pollux, and Castor. The most common myth claims that Zeus transformed himself into a swan to couple with Leda. Some versions claim that she loved Zeus and willing had sexual relations with him, while other versions claim she was seduced and therefore was not willing. That same night, she coupled with Tyndareus also. Leda then gave birth to four children at the same time. The two pairs of twins resulted in Helen and Pollux belonging to Zeus, and Clytemnestra and Castor belonging to Tyndareus. Though each pair is attributed to