Lotte Frömel-Fochler. Black and white botanical fabric sample, between 1903 and 1932. Rudolph Schaeffer papers, 1880s-1997. Archives of American Art, Smithsonian Institution.
Koloman Moser. Geometric pattern fabric sample, between 1903 and 1932. Rudolph Schaeffer papers, 1880s-1997. Archives of American Art, Smithsonian Institution.