bn:02846112n
Noun Named Entity
Categories: People from Aurora, Illinois, Educators of the blind, 20th-century American inventors, 19th-century American inventors, People from Sugar Grove, Illinois
EN
Frank Haven Hall  Frank H. Hall  Hall Braille Writer
EN
Frank Haven Hall was an American inventor and essayist who is credited with inventing the Hall braille writer and the stereographer machine. Wikipedia
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EN
Frank Haven Hall was an American inventor and essayist who is credited with inventing the Hall braille writer and the stereographer machine. Wikipedia
American educator Wikipedia Disambiguation
Inventor of the first successful mechanical point writer for Braille Wikidata
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