The most successful insta
The most successful instance of a certain type of this was designed by R. Orin Cornett, and William Stokoe wrote some important books on one of these. One of these was used by disparate groups of Plains Indians in the nineteenth century, and a noted example of the emergence of one of these involves the Villa Libertad vocational center and a school in San Judas. In addition to that Nicaraguan one, an artificial one was created by the Abbot of l'Epée and exported to Hartford, Connecticut in 1816 by Laurent Clerc. There, the French type was transmuted into an American type by Thomas Gallaudet. For 10 points, name these systems of sound-free communication, often used by the deaf.
The most successful instance of a certain type of this was designed by R. Orin Cornett, and William Stokoe wrote some important books on one of these.