Versions of this anonymous letter (probably by Auguste de Staël) were published in the Journal de la Société de la Morale Chrétienne, vol. 6, no. 33 (1826), 185-92, and in the pamphlet entitled: Faits relatifs à la traite des noirs (Paris: Crapelet, 1826). Similar letters were also published in the French press, including Le Courrier Français, 341 (7 December 1825, 3-4).
De Staël would recount this visit to Nantes, and exhibit the chains he and a companion bought there at the annual general meeting of the Society, in April 1826 (see account of this meeting in the 'Revue Protestante', tome III).