Cover art
Richard-Bessiègre, F. Croisière dans le temps. Fleuve Noir 1951.

Richard-Bessiègre, F. Croisiègre dans le temps
Divergence: 1610 CE
What if: Time travelers prevented the assassination of Henri IV in 1610.
Summary: France unifies Europe, but world war begins a century later and civilization collapses in the 20th century.
Published: Fleuve Noir 1951.
Original in: French.