CENTER CITY (WPVI) -- Mayor Michael Nutter marked the 150th anniversary of the abolition of slavery Sunday by reading the 13th Amendment at the National Constitution Center.
A rare copy of the 13th amendment, signed by Abraham Lincoln, is on display at the center.
There were also a screening of "The Abolitionists" and a discussion on the event that changed history.
VIDEO: Mayor Nutter marks 150th anniversary of abolition of slavery
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