Collins, M. T. T. T. (1995). "History of Deaf-Blind Education". The Journal of Visual Impairment & Blindness. 89 (3): 210–212. doi:10.1177/0145482X9508900304.
Cader-Nascimento, Fátima Ali Abdalah Abdel; da Costa, Maria da Piedade Resende (October 2003). "A prática educacional com crianças surdocegas" [Educational practice with deafblind children]. Temas Em Psicologia. 11 (2). ISSN1413-389X. Archived from the original on 2010-11-10. Retrieved 2024-06-11.
Cader-Nascimento, Fátima Ali Abdalah Abdel; da Costa, Maria da Piedade Resende (October 2003). "A prática educacional com crianças surdocegas" [Educational practice with deafblind children]. Temas Em Psicologia. 11 (2). ISSN1413-389X. Archived from the original on 2010-11-10. Retrieved 2024-06-11.
wikipedia.org
pt.wikipedia.org
However, there are accounts of deaf-blind people communicating in tactile sign language before this time, as deaf-blind Victorine Morriseau (1789–1832) had successfully learned French as a child some years earlier.[1][2]
worldcat.org
search.worldcat.org
Cader-Nascimento, Fátima Ali Abdalah Abdel; da Costa, Maria da Piedade Resende (October 2003). "A prática educacional com crianças surdocegas" [Educational practice with deafblind children]. Temas Em Psicologia. 11 (2). ISSN1413-389X. Archived from the original on 2010-11-10. Retrieved 2024-06-11.