W. L. Garrison & I. Knapp

Garrison co-published weekly issues of The Liberator from Boston continuously for 35 years, from January 1, 1831, to the final issue of December 29, 1865. Although its circulation was only about 3,000, and three-quarters of subscribers (in 1834) were African Americans, the newspaper earned nationwide notoriety for its uncompromising advocacy of "immediate and complete emancipation of all slaves" in the United States.