File:Early vacuum tube public address system.jpg
![File:Early vacuum tube public address system.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/6/64/Early_vacuum_tube_public_address_system.jpg/800px-Early_vacuum_tube_public_address_system.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:54, 23 April 2013 | ![]() | 900 × 614 (65 KB) | Chetvorno | User created page with UploadWizard |
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