The French postcards from the turn of the century, which were advertisements for Petrol Hahn a hair line product for men and women.
Scenes of Paris.
"Imp. Emile Pecaud & Cie, Paris
Edition of HAHN PETROLEUM FOR HAIR, F.VIBERT, MANUFACTURER, LYON
Luigi Aloys-Francois-Joseph Loir was born in Goritz, Austria, on December 22, 1845 and died in Paris on February 9, 1916, was a landscape painter, watercolorist, illustrator and French lithographer. (Source Wikipedia)"