Curious poster promoting La Bourboule, a small town in Auvergne (central France). It shows two women smiling, while the slogan reads "the capital of the allergy": at a first glance, the women don't seem to have any reason to smile. But La Bourboule is actually an important thermal resort, renowned for its anti-allergy therapies: the women have just being healed, that's why they are so happy! Lithograph poster printed by Ed. G. Gorde.