"Programmers at Work: Interviews With 19 Programmers Who Shaped the Computer Industry" by Susan Lammers.

https://www.amazon.com/Programmers-Work-Interviews-Computer-...

This book is from 1989, but it's a timeless and fascinating look at the minds of Bill Gates, Andy Hertzfeld (apple/mac), Dan Bricklin (visicalc), and 16 others.