Juan, knowing you're a Cleveland Brown fan, this book might be of interest. Former Cleveland Brown and NFL HOF RB Jim Brown wrote his autobiography in 1989. For any NFL fan and Browns fans in particular, this book is an interesting look at Jim Brown's NFL career, life and times. More than likely this book is out of print but you might find it at your local library or a local used book store. I bought my copy when it came out in '89, a first edition hardback. Here's the details...
Out Of Bounds
By Jim Brown with Steve Delsohn
Zebra Books Copyright 1989
First printing: September 1989