America's most famous abolitionist newspaper, The Liberator achieved fame and notoriety for its relentless call to end slavery.
The plaque reads: "Boston's uncompromising anti-slavery paper The Liberator was founded on this site in 1831 by William Lloyd Garrison (1805-1879), a leader of the abolitionist movement in Boston.
The Liberator was the voice of Boston's racially integrated anti-slavery community. It became the most influential abolitionist paper in America; contributors included Charles Sumner and Frederick Douglass. The journal moved to Cornhill in 1834; the building burned in the Great Fire of 1872."
The plaque is located at the northern tip of Post Office Square, at the northeast corner of Congress and Water Streets, affixed to a stone building that at the time of this writing was for lease.