Originally Posted by ElizabethN
I haven't read it yet myself, but I bought a book for my mother on the strength of a few reviews, that might be a good one for people here: Code Girls: The Untold Story of the American Women Code Breakers of World War II

I knew about the people at Bletchley Park in the UK, but I had no idea there were women doing similar things in the US.
Love this recommendation, I'm going to pick it up. And that reminds me of a similar (and fascinating) read:

The Code Book by Simon Singh