Theo Nieuwenhuis (Dutch, 1866-1951)
Acme Litho Co. (American, 19th/20th Century)
Anonymous
Georges Gaudy (Belgian, 1872–1940)
Auguste Donnay (Belgian, 1862 - 1911)
U.S.. Department of Health & Human Services (American, 1953-)
Eric Rohman (Swedish, 1891 - 1949)
Vojtech Preissig (Czech, 1873-1944)
George Reiter Brill (American, 1867 - 1918)
Anonymous
Arthur Burdett Frost (American, 1851 - 1928)
Louis Frederick Hurd (American, 1853-1904)
National Institutes of Health (American, 1887-)
Alfred Choubrac (French, 1853-1902)
Anonymous
Anonymous
Anonymous
George M. Reevs (American, 1864-1930)
Anonymous
Leopoldo Méndez (Mexican, 1902 – 1969)
Anonymous
Anonymous
Anonymous
David Ericson (American, 1870-1946)