The columbia microphone
The century of progress covered by the columbia microphone for millions of radio listeners. Souvenir of the World's Fair, Chicago. From the Columbia Broadcasting system, The World's Largest Radio Network
Picture No
10586510
Media ID
47572808
Size
5302px x 3399px
(3.0MB)
Credit
Mary Evans / Pharcide
Source
Unattributed postcard
Date
1933
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