In the London of the 1780s and 1790s, formerly enslaved Africans living in the imperial capital gathered into the first Black political organization in Britain, the Sons of Africa. Olaudah Equiano, Ottobah Cugoano, and their company wrote letters and petitions, gave public addresses, and published the autobiographies and abolitionist treatises that gave the movement against the slave trade its first sustained Black voice. Equiano’s Interesting Narrative and Cugoano’s Thoughts and Sentiments moved through the same drawing rooms where the Clapham Sect gathered down the river, and the two communities labored toward abolition together.