
Not new (I read 2.5 years ago), but great books:
Department of Mad Scientists: How DARPA Is Remaking Our World, from the Internet to Artificial Limbs by Michael Belfiore https://www.goodreads.com/book/show/6825113-the-department-o...
Rocketeers by Michael Belfiore https://www.goodreads.com/book/show/1090296.Rocketeers
I've read that he's read "Rocketeers" by Belfiore, along with "Rocket Propulsion Elements" and "Fundamentals of Astrodynamics".
I have all three. The latter two are very non-trivial.
Musk is extremely well informed about technology. The idea that he doesn't read is not compelling.
