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A full-scale replica of Bell's HD-4 is viewable at the Alexander Graham Bell National Historic Site museum in Baddeck, Nova Scotia.

< imagemap > File: 2nd millennium montage. png | From left, clockwise: In 1492, Christopher Columbus ; The American Revolution ; The French Revolution ; The Atomic Bomb from World War II ; An alternate source of light, the Light Bulb ; For the first time, a human being sets foot on the moon in 1969 during the Apollo 11 moon mission ; Aeroplanes become the most-used way of transport though the skies ; Napoleon Bonaparte, in the early 19th century, affects France and Europe on subjects of expansionism and modernization ; Alexander Graham Bell's telephone ; In 1348, the Black Death kills over 100 million people worldwide, and over half of Europe, in two years.

It was invented jointly by Alexander Graham Bell and his assistant Charles Sumner Tainter on February 19, 1880, at Bell's laboratory at 1325 L Street in Washington, D. C.

An early experimental non-magnetic tape recorder patented in 1886 by Alexander Graham Bell's Volta Laboratory.

The earliest known audio tape recorder was a non-magnetic, non-electric version invented by Alexander Graham Bell's Volta Laboratory and patented in 1886 ().

In 1880 Alexander Graham Bell and his assistant Charles Sumner Tainter created the Photophone, at Bell's newly established Volta Laboratory in Washington, DC.

* Alexander Graham Bell ( 1847 – 1922 ), inventor, spent considerable time in Haverhill initially as a tutor to the deaf son of a prominent shoe magnate who later invested in Bell's telephone concept

Additionally, Alexander Graham Bell's family's first home in North America was a farmhouse on Tutela Heights ( named after the First Nations tribe which settled the area, and later absorbed into Brantford ) where Bell invented the electric telephone in July, 1874 — although he built his first working model in Boston — and then developed early improvements to it in 1876.

Alexander Graham Bell's earliest switching office for the Bell System was located on a site just below the C & O Canal, and it remains in use as a phone facility to this day.

In 1875, Gray sold his interests to Western Union, including the caveat that he had filed against Alexander Graham Bell's patent application for the telephone.

There also exist featural phonetic transcription systems, such as Alexander Melville Bell's Visible Speech and its derivatives.

The aviation age came to Canada on 23 February 1909, when Alexander Graham Bell's Silver Dart took off from the ice of Bras d ' Or Lake at Baddeck, Nova Scotia with J. D.

Held in Fairmount Park, exhibits included Alexander Graham Bell's telephone and the Corliss Steam Engine.

These included the design work for the Boer War Memorial Fountain in Windsor, Ontario ( 1906 ), the South African War Memorial in Toronto ( 1910 ), The Baldwin-Lafontaine Monument on Parliament Hill in Ottawa ( 1914 ) and the Bell Memorial commemorating Alexander Graham Bell's invention of telephone in Brantford, Ontario ( 1917 ).

Among the many inventions on display was Alexander Graham Bell's telephone.

In 1876, Alexander Graham Bell employed Latimer, then a draftsman at Bell's patent law firm, to draft the necessary drawings required to receive a patent for Bell's telephone.

Excerpts from Elisha Gray's patent caveat of February 14 and Alexander Graham Bell's lab notebook entry of March 8, demonstrating their similarity.

That same morning a lawyer for Alexander Graham Bell submitted Bell's patent application.

Others, including Alexander Melville Bell's Visible Speech and John Malone's Unifon were developed for pedagogical use.

Selfridge took his first flight on December 6, 1907, on Alexander Graham Bell's tetrahedral kite, the Cygnet, made of 3, 393 winged cells.

Professor Alexander Graham Bell's New Machine, Built After Plans by Lieutenant Selfridge, Shown to Be Practicable by Flight Over Keuka Lake.

Professor Alexander Graham Bell's new aeroplane, the Red Wing, was given its test flight over Lake Keuka today by F. W. Baldwin, the engineer in charge of its construction.

Baddeck was home to Alexander Graham Bell and was witness to the first flight in the commonwealth by Bell's Silver Dart in 1909.