 It was a correspondence between Mary and Maria Weston Chapman concerning a women's anti-slavery committee that created the first Anti-Slavery Convention of American Women in New York in 1837.She was a member of the Woman's Anti-Slavery Convention in 1838, which held its sessions in Pennsylvania Hall, surrounded by a furious mob, which destroyed the building by fire a few hours after the convention adjourned.Grew and her father were invited to the World Anti-Slavery Convention beginning 12 June 1840 in London.