This book should be required reading in junior high and middle school classes and for anyone who feels that women aren't suited for STEM classes or careers. Not only is it packed with history on the American Space program, it also shows the integral parts played in said history by women.
Adult women should to read this book, to see all the amazing first steps taken by the Rocket Girls--working moms, pioneering computer science majors, first users of electronic calculating machines and computers, the first women to wear pantsuits to work.
Boychild geeks who want women out of science fiction need to read this book and learn that there wouldn't be jet engines or spaceflight without women.
And frankly, anyone who loves a good story should read this, because it's not at all dry. The book is factual and supported with all kinds of documentation, but it's also a thrilling adventure tale that sweeps you right along.
I also learned that the first flyby of Mars happened on the evening of the day I was born.