This is a great book by Tom Wright, a photographer who worked with many of 1960s/1970s great rock groups, including The Who and Faces.  The Who's Pete Townshend is a personal friend of the author's and provides the Foreword for the book.  Many of the photos are of The Who, but also includes Faces, Joe Walsh, and a few other onesies and twosies, like Jeff Beck, Bob Seger. The photos are generally candids, from backstage/rehearsals, hotels, though some posed. Mostly touring shots. There are also some color plates of the photographer's time in Mexico, which are really interesting.