Space Settlements- A Design Study (NASA SP-413)

TL;DR — The 1975 NASA–Stanford summer study that designed the Stanford torus, a space colony for 10,000 people, with the famous Rick Guidice paintings.

How much weight it carries: A serious engineering design study of its era; the numbers are 1970s assumptions.

Where this came from

• Will Manidis’s “most underrated PDF” thread, July 2023 — routing record: The Most Underrated PDF on the Internet (July 2023)

204 pages. A copy is archived locally against link rot; the header links the original source.

The archived copy is split into 4 parts to stay under GitHub’s file-size limit; the parts’ page counts sum to the original 204.