I found excerpts from "1940's Hairstyles" at scribd here for free this is the link: 1940s-Hairstyles
Actually, I did some more research on this book. I found this book on amazon for $90.00!!! Can you believe that?! It's free at the link above, it's just the images were scanned at very poor quality.
Also interesting link to huge catalog of 'Remembering the 1940's Books Site'