A famous documentary collection published by Hachette starting in 1982, La Vie Privée des Hommes allows readers to discover the daily lives of civilizations throughout history. Pierre Joubert illustrated many volumes, including Les Temps préhistoriques (Prehistoric Times), Au temps des Hébreux (In the Time of the Hebrews)... 40 BC / AD 70, Au temps des Gaulois (In the Time of the Gauls), and more. His realistic artwork, remarkable for its historical accuracy (costumes, weapons, architecture, and scenes of everyday life), contributed greatly to the success of the series. Yet beyond its documentary rigor, Joubert breathed genuine life into his illustrations through expressive characters, dynamic compositions, a superb mastery of color and a true commitment to authenticity.