10 terrific football books

The 2013 Super Bowl brings us a clash between the Baltimore Ravens and the San Francisco 49ers. Previous Super Bowls -- and the sport of football in general -- have inspired some great writers to turn to the page. Some see parallels between football and war; others connect football and American masculinity; others simply want to tell stories about the game. Here are 10 terrific football books, good for reading in any season.