The turn of the 20th century was a golden era in France. It was an age of peace, prosperity, and progress after a series of bruising wars and turmoil within the French Republic, culminating in the Franco-Prussian War, which had ended in 1871. From the ruins of conflict, the Belle poque brought joie de vivre flourish, a boom in art, design, industry, technology, gastronomy, education, travel, entertainment, and nightlife. Through some 800 vintage...