Ignition: An Informal History of Liquid Rocket Propellants (1972) [pdf]
This was a favorite book of mine as a child. It was one of the last books that I scanned and uploaded to sciencemadness.org. That's probably for the best, since I was still learning how to make good scans and PDFs with the early books.<p>When I first started scanning and uploading books, Google Books did not yet exist. The HathiTrust did not yet exist. Project Gutenberg and Distributed Proofreaders <i>did</i> exist, but their focus on perfect text transcription of non-technical writing did not really suit the books that I wanted to share.<p>I stopped scanning books because the world largely caught up and surpassed what I could do. Between HathiTrust, Library Genesis, and sci-hub, there has never been a better time for doing deep-dive reading from the comfort of one's own living room. But I'm proud that so many people have enjoyed my scan of this book over the years.