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  The telegraph and telephone are both wire-based electrical systems, and Alexander Graham Bell's success with the telephone came as a direct result of his attempts to improve the telegraph.
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  This was used in industries.
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  This is a Thompson Houston Desk Telephone
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  Higginson, a civil war hero and founder of the Boston Symphony, used this to call over seas.
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  The Western Electric model 102 was the first handset telephone.
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  Ben Franklin came up wtih this idea.
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  This desk phone is call "Eiffel Tower."