A combine of three lunar shelters provides adequate quarters for a construction of eighteen men. It will take many years to complete a major moon colony for 100 or more men-and women.
The Next Fifty Years On The Moon
by Erik Bergaust
G.P. Putnam’s Sons, 1974
Image credit: Boeing
Image source: Numbers Station
Image credit: Bell
Image source: Numbers Station
Exploring Tomorrow in Space
Thomas Becker
Sterling, 1972
Image credit: NASA
Image source: Numbers Station
Image credit: NASA MSFC
Images: SDASM Archives
Image credit: Hayes International
File source: NASA NTRS
Image credit: Northrop
File source: NASA NTRS
Our World in Space
Robert McCall & Isaac Asimov
New York Graphic Society, 1974
Image credit: Robert McCall
Image source: Numbers Station
Image credit: North American
Image source: Numbers Station
