Victor Prouvé (French, 1858-1943)
Imp. Charles Lévy (French, 19th/20th century)
Anonymous
Edward Penfield (American, 1866 - 1925)
Maxfield Parrish (American, 1870 - 1966)
Imp. F. Champenois (French, 19th/20th century)
Kurt Schwitters (German, 1887 - 1948)
U.S. Information Agency (American, 1953-1999)
Adrien Barrère (French, 1874-1931)
Anonymous
Harold V Shaw (Canadian, 1902-1975)
Hans Schleger (German, 1898 - 1976)
Anonymous
Eric Rohman (Swedish, 1891 - 1949)
Anonymous
Jean d'Ylen (French, 1886-1938)
Anonymous
Laboratoires du Normogastryl (French, 20th Century)
National Institutes of Health (American, 1887-)
Henri Boulanger Gray (French, 1858-1924)
Imp. Chaix (French, 1845 - 1965)
Louis Rhead (American, 1857-1926)
Theo van Hoytema (Dutch, 1863-1917)
Anonymous