Periodically I'll recommend some great comic book related books that cover the history and backgrounds of the creators of this great medium. The first one I'm going to cover is The Comic Book Makers, the memoir of the legendary co-creator of Captain America Joe Simon. Co-written with his son Jim, it's a very in depth look at the career of Mr. Simon from the Golden Age Of Comics to the present. It's chock full of great art and stories about such luminaries as Captain America, The Boy Commandos, Sandman, and many, many more. I was lucky enough to get an autographed copy when I ordered it several years ago.
If you're interested in the history of comics, this book is a must read!