
Edward Penfield (American, 1866 - 1925)

Kurt Schwitters (German, 1887 - 1948)

Paul Scheurich (German, 1883-1945)

Henri Meunier (Belgian, 1873-1922)

Jan Stanisławski (Polish, 1860-1907)

Vittorio Grassi (Italian, 1878–1958)

Anonymous

Anonymous

Anonymous

Laboratoire des produits Scientia (French, 20th Century)

Anonymous

Leonetto Cappiello (Italian, 1875-1942)

Laboratoires Biosedra (French, 20th Century)

Laboratoires G. Beytout (French, 20th Century)

Francisque Poulbot (French, 1879-1946)

Laboratoire d'actino-biologie (French, 20th Century)

Etablissements Byla (French, 20th Century)

Strobridge & Co. Lith. (American, 1847 -)

Joseph Binder (Austrian, 1898-1972)

Hilary Knight (American, 1926-?)

Fritz Rumpf (German, 1856-1927)

Augusto Giacometti (Swiss, 1877 – 1947)

Louis Tauzin (French, 1845–1914)