Kind of reminds me of when I picked up a copy of Ignition! (https://www.amazon.com/Ignition-informal-history-liquid-propellants/dp/0813507251 https://www.amazon

Kind of reminds me of when I picked up a copy of Ignition! (https://www.amazon.com/Ignition-informal-history-liquid-propellants/dp/0813507251 https://www.amazon.com/Ignition-informal-history-liquid-prop...) at a used bookstore for $5. I definitely got my money's worth out of the read, and I was quite surprised years later when I heard it was very rare. I still haven't sold it. I love used bookstores.