Many of those images were also published in O'Neill's book, The High Frontier: Human Colonies in Space: https://en.wikipedia.org/wiki/The_High_Frontier:_Human_C

Many of those images were also published in O'Neill's book, The High Frontier: Human Colonies in Space: https://en.wikipedia.org/wiki/The_High_Frontier:_Human_Colonies_in_Space https://en.wikipedia.org/wiki/The_High_Frontier:_Human_Colon...