Regniowez à Hirson les bois l'accompagnent". L'Union (in French). Manceau, Henri; Clerc, Jean (1990). La Manufacture d'armes de Charleville (in French). SOPAIC
Imberger Mystery Directed by Jacques Séverac Written by Frédéric Boutet HenriClerc Jacques Séverac Based on Le Spectre de M. Imberger by Henry de Gorsse
and cultural critic. He is best known for his short book, La Trahison des Clercs from 1927 (The Treason of the Intellectuals or The Betrayal by the Intellectuals)