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"Deaf and Dumb Alphabet. For the use of Deaf Mutes, and for the amusement and convenience of those who wish to Speak with the Hand and Hear with the Eye. “Manusvicaria Linguæ,” the hand performs the part of the tongue.’ Sign Language Guide published ca. 1900.

"Deaf and Dumb Alphabet. For the use of Deaf Mutes, and for the amusement and convenience of those who wish to Speak with the Hand and Hear with the Eye. “Manusvicaria Linguæ,” the hand performs the part of the tongue.’ Sign Language Guide published ca.