Although several people were involved in the early development of the telephone, it was finally Alexander Graham Bell who commercialized this invention in 1876.
This important step in the development of telephony was worldwide remembered in 1976, one hundred years later. Some countries remembered somewhat later the introduction of telephony and/or telephony switching in their country.
Some of them published a book, others issued a stamp. Here an overview of stamps I could retrieve from delcampe.net
Click on a stamp to enlarge it.
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| Austria | Burundi | DDR | Denmark | Finland | Granada 1 |
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| Granada 2 | India | Indonesia | Liberia 1 | Liberia 2 | Norway |
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| Paraguay | Portugal 1 | Portugal 2 | Suriname | UK | USA |
Changed on 01/12/20 by Jan Verhelst