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en.wikipedia.org/wiki/Invention_of_the_telephone

The invention of the telephone was the culmination of work done by many individuals, and ..... Alexander Graham Bell is the inventor of the first practical telephone. The classic story of him saying "Watson, come here! I want to see you!

www.americaslibrary.gov/jb/recon/jb_recon_telephone_1.html

The First Telephone Call March 10, 1876. What were the first words ever spoken on the telephone? They were spoken by Alexander Graham Bell, inventor of the ...

www.history.com/topics/inventions/alexander-graham-bell

Bell was granted the first official patent for his telephone in March 1876, though he would later face years of legal challenges to his claim that he was its sole ...

www.history.com/this-day-in-history/alexander-graham-bell-patents-the-telephone

In this first telephone, sound waves caused an electric current to vary in intensity and frequency, causing a thin, soft iron plate–called the diaphragm–to vibrate.

www.wired.com/2008/03/dayintech-0310

Mar 10, 2008 ... Early Office Museum __1876: __Alexander Graham Bell makes the first telephone call in his Boston laboratory, summoning his assistant from ...

www.loc.gov/rr/scitech/mysteries/telephone.html

Alexander Graham Bell is often credited as the inventor of the telephone since he was awarded the first successful patent. However, there were many other ...

blog.oup.com/2012/03/alexander-graham-bell-first-telephone-call

Mar 10, 2012 ... Thomas Watson, Bell's collaborator, heard the words in another room over the receiver. And the world's first telephone call was complete.

www.brighthubeducation.com/history-homework-help/108228-alexander-graham-bell-and-the-invention-of-the-telephone

Feb 6, 2013 ... Alexander Graham Bell invented the first ever telephone. It worked by transmitting sound of varying pitch over a wire. This article discusses how ...

www.celebrateboston.com/first/telephone.htm

Site where the telephone was invented by Alexander Graham Bell and Thomas ... A plaque commemorating the historic first transmittance of sound over wire is ...