This was the largest advertising campaign, driven by vast, sprawling networks that developed over the course of a century, leading up to the creation of the SNCF in 1937. The Northern, Southern, Western, and Eastern Railway Companies, as well as the Paris-Lyon-Mediterranean Railway and the Orient Express, all contributed to this boom. Thousands of train stations were built, and many cities and sites became accessible, making their promotion essential. Today, these posters remain one of the most sought-after collections. They certainly deserve to be promoted. Art Deco colors are one of its strongest graphic identities (1910–1930): red and fawn-orange suns, violet shadows, and soft greens…