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This unassuming little device, called a “Hush-A-Phone,” is a small rectangular baffle that fits over the mouthpiece of a candlestick telephone. There is an opening in the front just big enough to place your lips into. When you speak, the party on the other end of the line can hear clearly, but no one in the room with you can …
Advertisements described it as a “telephone silencer” that would solve three separate problems often encountered by phone users. It would ensure the privacy of phone calls, dampen the cacophony of office environments, and keep background noises out of the conversation. The Hush-A-Phone would go on to accomplish so much more than that. Hush-A-Phones were produced beginning in 1921 in models …
