Penta-bolt, used for securing utility boxes, manhole covers and fire hydrants, unknown first use but prob. 20th century
City Hall Park
Manhattan, City Hall Park, South of Chambers Street and East of Broadway between City Hall and Tweed Court House
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City Hall Park, New York, NY (2010)
2010
Excavations at New York's City Hall Park in 2011 produced artifacts and features from the 18th through 20th centuries. Many of these come from the Revolutionary War period when the park was the site of British barracks, an almshouse ...
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