I picked this book up on recommendation from a friend who found out I was trying to get into vintage knitting- and after tracking down a $6 copy through Abe Books, I can definitely see why she recommended it.
Short of some very bad fashion history (if I see one more person talk about "the horrors of corsetry" I will start throwing books)... And a very questionable definition of what constitutes as "vintage" (it's 20-100 for vintage, 100+ for antique, and then you still have retro vs reproduction in the -20 category on top of everything)? The book is jam packed with incredibly useful and enlightening information from top to bottom.
This is not a pattern book, though, and doesn't contain patterns for any of the sweaters listed. You'll have to actually track down the patterns outside of this book, if you see something that catches your eye- so if you're looking for a pattern book, you're going to be disappointed; something like A Stitch In Time: V. 1: Vintage Knitting & Crochet Patterns 1920 1949 will be more along the lines of what you're looking for, if you want patterns.
What this book does, is teach you how to find and work with authentic vintage patterns, how to convert them to modern methods, and how to add authentic vintage elements to modern knits. And in that regard it genuinely excels; if you want to get into true vintage knitting, it's a great starting place for what can really be a very confusing area.
Honestly, my only real complaint about the book is that, while I love the way the book is separated into the two parts it is ("updating vintage patterns" and "Retro-Styling Modern Patterns")... I dislike how the actual text of the book itself is laid out; I'm not a fan of the multi-column structure with small text in the slightest, and it definitely detracts from the books overall readability. My visually impaired personage would have preferred a much larger font and less squished page design.
It's also just bad page design in general, and there's no real reason it should have been laid out that way in the first place. Whoever decided this was the way to lay out the pages should've been smacked for it. It's not enough for me to really detract any stars, however- especially since it's very likely not the author's fault.