"That photo comes from a section in the book about hair. In 1971 or so, Robert Plant had that kind of curly, tussled kind of hair. As he said in my book, his hair had a mind of its own. And there was something really beautiful about it. Every woman that looked at Robert was gaga. Robert had his own hair style. He didn't follow what was happening at the time, which was a little bit more shaggy. He just let it go with all those curls."