© AP Photo, Unknown photographer, Nov. 9, 1979, Demonstrators burn an American flag atop the wall of the U.S. Embassy where students have been holding American hostages since Nov. 4, Iran

On Friday, September 27, 2013 United States President Barack Obama made a phone call to Iranian President Hassan Rouhani. The last direct conversation between the leaders of the United States and Iran was in 1979 before the Iranian Revolution toppled the pro-U.S. Shah and brought the Ayatollahs to power.

Historic photographs, published by Denver Post, date from 1890 to 1981, recalling the century leading up to Iran’s 1979 revolution and the American embassy hostage crisis in Tehran.

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