Dr. Seuss and Graduation

Sometimes I think that Dr. Seuss and graduation go together like green eggs and ham. Why? Year after year, when booksellers put up their display of books that make good graduation gifts, one book always appears. It's Dr. Seuss's Oh, the Places You'll Go! This joyous children's picture book is a perennial favorite, appealing to new high school and college graduates, just as it does to young children. Are there other Dr. Seuss books that you recommend as graduation gifts?