Subsequently serialized as The Secret Agent in Classics Illustrated (New York, NY, USA) (Jan 1990)
Translated by Conrad's friend Henry-Durand Davray, this feuilleton of the novel was serialized on the first page of Le Temps between May and July 1910. Claude Debussy recorded reading the serialization avidly in a letter of 8 July 1910.
Individual issues may be viewed for free at the digital archive of the National Library of France: