Casson, Herbert Newton, 1869- · Chicago, A.C. McClurg & Co. · leaf 30
mpressed by the progress made by these pupils,and by the pathos of their dumbness, that whenhe arrived in Canada he was in doubt as to whichof these two tasks was the more important — theteaching of deaf-mutes or the invention of amusical telegraph. At this point, and before Bell had begun… … rfV.
Telephone
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