The fame of the eloquent, extremely intelligent, popular (and justly so) abolitionist Frederick Douglass usually eclipses the success of his contemporary William Wells Brown. In 1853, he published a fictional novel in London called Clotel, which is considered the first novel published by an African American. Brown himself was a slave who escaped to the north when he was 20 (in 1834). After working with some abolitionists in America, he traveled to England with his daughters in 1849 to lecture against slavery.
Along the lines of important success being eclipsed by popular (and equally important) success, the work of the Boston Female Anti-Slavery Society and other anti-slavery societies around this juncture in time is worth more attention.
During its seven year history - from 1833 to 1840, it managed to hold 3 national women's conventions, develop a large petition campaign, brought litigation upon southerners who brought slaves to Boston, and raise money through successful, elaborate fundraisers. Their preamble was the following:
This particular group was interracial, and provided further momentum for other anti-slavery societies at the time, including the Salem Female Anti-Slavery Society (which was begun by a group of Black women, and expanded to become interracial after 2 years).