History Timeline - Who was alive, when, and where?
Y Combinator Companies - Interactive list of all 1000+ YC companies
The Careers of the Founders - A timeline of success & failures of remarkable entrepreneurs
Apply to YC (Y Combinator) - Curated collection of resources for founders applying to YC.
From Millions to Billions - What age did they make their first billion?
Startup School - How to start a startup, by Y Combinator