- Digital Commonwealth
- Perkins School for the Blind
American Braille Alphabet Card that displays the alphabet and a specimen of Braille writing. Specimen reads: "The block of granite which was an obstacle in the pathway of the weak becomes a stepping-stone in the pathway of the strong." This alphabet is not the same as the American braille alphabet that is now in use. Dadmun Co., N. E. Cinematograph Film Co., 1 Washington St., Boston, Mass.
- Samuel P. Hayes Research Library, Perkins School for the Blind, Watertown, MA. Contact host institution for more information.