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
Pollux (mountain) The first winter and ski ascent of Pollux was by Dr Alfred von Martin and Karl Planck on 7 March 1913. There are also a pair of summits named Pollux and Castor in Yellowstone National Park in Wyoming, USA. Located in the Absaroka Range, Pollux is 3,373 m, 65 m higher than its twin. Pollux (mountain) Pollux () is a mountain in the Pennine Alps on the border between Valais, Switzerland and the Aosta Valley in Italy. It is the lower of a pair of twin peaks (), the other being Castor, named after the Gemini twins of Roman mythology.