Little Nipper (1884-1895): Article from The Journal of the International Association of Jazz Record Collectors.
Nipper Says "Woof": Pictures of Nipper memorabilia, his story, and links.
Nipperhead: Nipper and Nippereabilia: The story of, and some of the paraphernalia related to, the popular mascot and advertising logo.
Sterlingtimes: Nipper and His Master's Voice: History with photographs.
The History of Nipper and His Master's Voice: Erik Oestergaard tells the story and shows some pictures of Nipper.