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President William Howard Taft

President William Howard Taft on the phone. Taft was the 27th U.S President serving from 1909 - 1913. (Harris & Ewing Collection /Library of Congress)

'Please hold for the President' – The power of the presidential phone

From Rutherford B. Hayes saying "That is wonderful" to Barack Obama clashing with Vladimir Putin over Ukraine, the presidential telephone call has been at the heart of American diplomacy for 137 years. Here are some of our favorite pictures of presidents making a connection.

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