Possible Clues:

• He gets lost in the crowd
• Magoo's nephew
• See 99-Down
• Synchronized swimming gold medalist Caroline
• Rule about taking the same name Emerson had
• Character often found in children's books
• Striped shirt wearer of children's books
• Who can be found in the Waldorf Astoria?
• Stripe-shirted, bespectacled fellow of picture books
• Character often lost in a crowd