- The Soul of a New Machine by Tracy Kidder (free online)
- Bootstrapping by Thierry Bardini (free online)
- How to Solve It by Polya (free online)
- How Buildings Learn by Stewart Brand (more info)
- The LISP 1.5 Programmer’s Manual by John McCarthy, et al. (free online)
- Thinking Forth - by Leo Brodie (free online)
- Jess in Action by Ernest Friedman-Hill (free online)
- Site Reliability Engineering by numerous Google engineers (free online)