- Digital Commonwealth
- Perkins School for the Blind
Grey panel with 13 photographs of children's hands. Alexander Mell was interested in what he called "Gute Lesehande" or "Good Reading Hands". Imperial Royal Institute for the Education of the Blind, Vienna. Alexander Mell.
Black and white photograph
- Samuel P. Hayes Research Library, Perkins School for the Blind, Watertown, MA. Contact host institution for more information.