These great hollow globes of artificial super-metals, and artificial transparent adamant, ranged in size from the earliest and smallest structures, which were no bigger than a very small asteroid, to spheres considerably larger than the Earth. (Olaf Stapledon, STAR MAKER)
Sunday, October 9, 2016
A sketch (colored magic marker?) by Robert McCall of a lunar colony. I recall a bunch of these appearing in a magazine (newspaper Sunday supplement?) in the 1970's.