The book My Favorite Giant is a discussion between Mayhew and a little girl, Katie, where Mayhew teaches the girl about how people used to treat those that are different, but also how people can get past those differences and accept each other.
Mayhew's book is a great message where he explains what it was like growing up and how he didn't really feel like he fit in until he got to play Chewbacca in Star Wars. On set, he met Kenny Baker, the man under the dome of R2-D2. It was the friendship of the little man, and many of the other people in the movie, that made him feel much better about his height.