Dennis Baron is professor of English and linguistics at the University of Illinois and writes regularly on linguistic issues at 
Behind the Dictionary
Lexicographers Talk About Language
The Telephone is 133 Years Old. Call Me.Tue Mar 10 00:00:00 EDT 2009By Dennis Baron
On the 133rd birthday of the telephone, Dennis Baron ponders how Alexander Graham Bell's invention forever changed the way we communicate — and brought the word "hello" into common usage. Baron is professor of English and linguistics at the University of Illinois and writes regularly on linguistic issues at The Web of Language.
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