Obviously the title has a twofold interpretation. One: it was a catch-phrase from his defining role; Two; it really is descriptive of the essence of the book.
I bought a book several years ago by Clayton Moore. It had a lot of things in the book other than The Lone Ranger. Of course it was truly interesting and informative, but he didn't go into feelings and real behind the scenes riveting data. Of course I wasn't on a Lone Ranger website either where I got a lot of info. His info was therefore new to me.
His book was aptly entitled: "I Was That Masked Man". (For those of you who never saw the show...every episode ended with someone asking: "Who was that masked man?"...and someone replying "Why that's the Lone Ranger".