Frédéric Soulié is another writer of the roman frénétique. In his time he was as well known as Balzac or Eugène Sue. His Les Mémoires du diable (1838) is mentioned in Colin Wilson’s Misfits and the Romantic Agony.
Who knows who did the painting on the Robert Laffont edition shown above? It looks like something done by Daumier.