THE HALL OF SOUNDERS

J.H. BUNNELL 1875 LOCAL SOUNDER WESTERN ELECTRIC "TUBE" SOUNDER
G.M. PHELPS LOCAL SOUNDER G.M. PHELPS CLOSE-UP
RACK AND PINION GHEGAN SOUNDER CLOSE-UP OF RACK AND PINION
PARTRICK AND CARTER LOCAL SOUNDER TILLOTSON LOCAL SOUNDER

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