National Institutes of Health (American, 1887-)
Anonymous
Nelu (American, 20th century)
Anonymous
Victor Emile Prouvé (French, 1858-1943)
Remi Kramer (American, 20th Century)
National Institutes of Health (American, 1887-)
Douglas Volk (American, 1856-1935)
Anonymous
Marc (French, 19th/20th century)
Gray Litho. Co (American, 19th/20th Century)
Anonymous
Florence Lundborg (American, 1871-1949)
U.S. Information Agency (American, 1953-1999)
NASA (American, 1958 -)
Ernest Thelem (French, 1869-1930)
Alphonse Mucha (Czech, 1860-1939)
Anonymous
Charles Hubbard Woodbury (American, 1870-1939)
Anonymous