As America marks the one-year anniversary of the Boston Marathon bombings, look back at the history of terrorist attacks on home soil.
On Jan. 24, 1975, a bomb exploded in New York City's historic Fraunces Tavern, killing four and wounding more than 50 people. A Puerto Rican nationalist group claimed responsibility and police tied 13 other bombings to the group. The tavern is seen here in 2008.
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National Portrait Gallery, London
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Greg M. Cooper-USA TODAY Sports/Reuters
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