Ooh, I'll have to keep an eye out! Have you read Ignition! [0] to give a comparison?

0: https://www.amazon.com/Ignition-informal-history-liquid-prop...

EDIT: archive.org appears to have it: https://archive.org/details/somebirdsdontfly00paul

Kind of reminds me of when I picked up a copy of Ignition! (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.

It's going for two grand on Amazon http://www.amazon.com/Ignition-informal-history-liquid-prope...

Yikes!

Seems like a good place to mention: "Ignition - An informal history of liquid rocket propellants"

http://www.amazon.com/Ignition-informal-history-liquid-prope...