Image: National Electric Signalling Company (1904 advertisement)
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Description: Advertisement for commercial point-to-point radiotelegraph (then known as "wireless") equipment
Title: National Electric Signalling Company (1904 advertisement)
Credit: Advertisement for the National Electric Signalling Company which appeared on page xxi of the April 22, 1904 issue of The Electrician magazine
Author: Company advertisement
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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