The beginning, the fashion sketches ads normal to the era, very classy.
Elysees 64.83 and Vent Vert were also made by Germaine Cellier, we can deduce her work for Balmain via Roure Bertrand Duponts laboratory was crucial for their success.
Quick note now that we are into it: In Grasse, France, due to its very particular conditions people could grow flowers and herbs easier and cheaper than other places and due to french authorities and richfags' culture of using too much perfume this town became the center of raw ingredients for perfumes in France and some for Cologne, the chief place making "Eau de Cologne". This coupled nicely with the fact Grasse also had master tanners since the middle ages and the techniques of making fragrant oils was used to perfume leather gloves and other stuff, famously by a dude called Galimard in the late 1500's, the tanner for the Medici's and other bunch of aristocrats. Later Grasse was subject to massive taxes and the leather business became an expensive niche among them but the tradition of fragrant raw materials stayed for a long while.
One day in 1820 a dude called Roure married a dudette called Bertrand and together founded a raw material factory called Roure Bertrand, decades later in 1900 the sons and grandsons managed the place, some of them studied hard and one of them, Louis, was able to extract the fragrant oils and stuff from materials using a solvent-based process rather than the traditional boiling; this was very highly advanced compared to other places and later, associated with a synthetics master called Dupont, opened a big ass factory and subsequent laboratories and became Roure-Bertrand-Dupont. Then after WWII this big conglomarate with labs opened a perfumery school called the Roure Perfumery School. Cellier was among the specialists in the interwar period.