National Institutes of Health (American, 1887-)
Anonymous
Augustus Jansson (Swedish, 1863 - 1931)
Anonymous
George Reiter Brill (American, 1867 - 1918)
Pat Keely (English, 1901-1970)
Anonymous
Edward Penfield (American, 1866 - 1925)
National Institutes of Health (American, 1887-)
Anonymous
Anonymous
Anonymous
Hans Schleger (German, 1898 - 1976)
Frédéric Auguste Cazals (French, 1865–1941)
Artcraft Lithograph (American, 1905–1970)
Paul Knowles (American, 19th/20th Century)
Louis Rhead (American, 1857-1926)
Moriz Jung (Austrian, 1885–1915)
Anonymous
Ivan A. Vladimirov (Russian, 1869-1947)