�A journey of a thousand miles begins with but a single step.� Introduction. The purpose of this project is to trace the development of telephone communication for the deaf-blind. Material available on such development can be found only in isolation a . . .

�A journey of a thousand miles begins with but a single step.� Introduction. The purpose of this project is to trace the development of telephone communication for the deaf-blind. Material available on such development can be found only in isolation a . . .