For nearly 20 years, between 1839 and 1858, Chapman edited "The Liberty Bell", an annual anti-slavery gift book sold at the Boston Bazaar as part of fundraising. The giftbook was composed of contributions from various notable figures: Longfellow, Emerson, Elizabeth Barrett Browning, Harriet Martineau, and Bayard Taylor, among others, none of whom was paid for their contributions aside from a copy of "The Liberty Bell". She also served as editor to "The Liberator" in Garrison's absence, and was on the editorial committee of the "National Anti-Slavery Standard", the official mouthpiece of the AASS. Chapman was also a member of the peace organisation, the Non-Resistance Society, which published "The Non-Resistant".