t’s pentagon time!
Honestly, this free DOD book had everything I needed: https://history.defense.gov/Portals/7…

That said, here’s a nice pop history I used (affiliate link):
https://amzn.to/3Kfzw97

Here’s the breathless (and awesome) coverage in Popular Mechanics:
https://books.google.com/books?id=WNY…

Here’s a ton of construction pics at Library of Congress: https://blogs.loc.gov/picturethis/202…

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