By way of @newsycombinator:
A whole big bunch of free NASA e-books in various formats, including Kindle and PDF.
A few titles that pique my interest:
- Unlimited Horizons: Design and Development of the U-2
- X-15: Extending the Frontiers of Flight
- Breaking the Mishap Chain: Human Factors Lessons Learned from Aerospace Accidents and Incidents in Research, Flight Test, and Development
I’ll admit some of these are a little geeky even by my standards. It takes either a professional or a special kind of person to want to read a history of pressure suit design, or one of the Langley wind tunnel. But guess what: I am that person, and I bet some of my readers are, too.
Besides, who doesn’t love the X-15 and the U-2?
(No, really, who doesn’t? Raise your hands. No, I’m not noting your IP address…)