Vallotton's vivid, enigmatic and sometimes unsettling paintings and woodcuts made him a key commentator on the social mores of fin-de-si cle Paris By the end of the 19th century, Paris was the unrivaled capital of the Western art world. Impressionism had transformed the visual arts and post-impressionism was flourishing in its wake; new boulevards and parks had modernized the city; theaters and department stores provided...