Sesame Street Library is a Sesame Street book in the "Elmo's Neighborhood" series, in which Elmo follows a little black puppy around the landmarks of Sesame Street. In this book, Elmo visits the Sesame Street Library. He meets his friend Betty Lou who misunderstands him and thinks he wants a book called "A Little Black Puppy". She assures him that if the book isn't there a librarian can get it for him from another library in the neighborhood. Elmo, who is thinking about the real puppy, is very impressed.