"All who helped" poster left at the Copley Square Memorial
Digital image of a poster left at the Boston Marathon memorial in Copley Square. Poster bears the phrase "All who helped." Image in center is photo taken by Chris Pentacoff of "American flag" created by hackers on MIT's Green Building in the wake of the September 11th attacks. Many messages on poster include references to MIT, Many messages are directed to first responders.
Collection 0247.004 Boston Marathon Temporary Memorial collection (Boston City Archives)
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