Merck (French, 20th Century)
Imp. Camis (French, 19th/20th century)
U.S. Information Agency (American, 1953-1999)
Anonymous
Egmont Arens (American, 1887-1966)
Wladyslaw Theodore Benda (Polish, 1873–1948)
George Illian (American, 1894-1932)
Laboratoires de Tacia (French, 20th Century)
Laboratoire Lobica (French, 20th Century)
Laboratoires des produits biologiques I.M. (French, 20th Century)
Henry Reuterdahl (American, 1871-1925)
Dan Smith (American, 1835-1934)
Jules Chéret (French, 1836-1932)
Jean d'Ylen (French, 1886-1938)
Adolphe Léon Willette (French, 1857 - 1926)
Frank Hazenplug (American, 1873-1931)
Lucien Lévy-Dhurmer (French, 1865 – 1953)
Huib Luns (Dutch, 1881-1942)
Hubert Rogers (Canadian, 1898-1982)
Karl Schnebel (German, 1874 – 1939)
Ludwig Stutz (German, 1865 – 1917)