Featured Image: Postcard No. 10 from Le Style Guimard series, “Hector Guimard in His Workroom at Castel Béranger,” 1903; Black ink, brush, watercolor on sepia paper; 8.9 x 13.9 cm (3 1/2 x 5 1/2 in.); Cooper Hewitt, Smithsonian Design Museum; Gift of Madame Pejol, 1958-84-1; Photo: Matt Flynn © Smithsonian Institution
