DescriptionCarbonButtonMicrophone.JPG English: Carbonmicrophone removed from a Western Electric telephone that was manufactured about 1976. Gerry Ashton
DescriptionWestern Electric double buttoncarbonmicrophone.jpg English: Western Electric Model 357 double buttoncarbonmicrophone in 1B housing, used at WFBM
DescriptionTwo double buttoncarbonmicrophones.jpg English: Two Western Electric double buttoncarbonmicrophones from 1938. Developed by Western Electric
DescriptionGeorge Olsen at WJZ with double buttonmicrophone 1926.jpg English: An interview with bandleader George Olsen (right) in 1926 at NBC's flagship
double buttoncarbonmicrophone, exhibit in the Museum of Science and Industry, Chicago, Illinois, USA. Probably Model 357. The double buttonmicrophone was