Top: from Arcology: City in the Image of Man, MIT Press 1969, page 116. At right: 2-foot segment of 34-foot scroll; Charcoal & crayon on butcher paper; April 1966. Scroll #C096, image #C096-006

From Arcology: City in the Image of Man:
"Asteromo is an asteroid for a population of about 70,000 people. It is basically a double-skinned cylinder kept inflated by pressurization and rotation of the main axis . . . the weight of a person will vary from zero at the axis to a fraction of his earthly weight on the ground. He will be able to fly without the need of any power devices. There will be Dantesque promenades at different levels of physical prowess -- from weak (center) to strong (periphery). . . . Man, standing head toward the axis of rotation, will be enveloped in a solid ecology."