Frédéric Auguste Cazals (French, 1865–1941)
Francis Day (American, 1863-1942)
Anonymous
Anonymous
Anonymous
Anonymous
Jan Rembowski (Polish, 1879-1923)
Guillermo (American, 20th century)
National Institutes of Health (American, 1887-)
Leonetto Cappiello (Italian, 1875-1942)
C.H. Perkins (American, 19th/20th Century)
Howard Chandler Christy (American, 1873 - 1952)
Fernand Le Quesne (French, 1856–1918)
Anonymous
National Institutes of Health (American, 1887-)
Andrea Kantrowitz (American, 20th century)
Anonymous
Firmin Bouisset (French, 1859-1925)
Richard Fayerweather Babcock (American, 1887-1954)
Anonymous
U.S. Information Agency (American, 1953-1999)
Elisha Brown Bird (American, 1867 - 1943)
Anonymous
Strobridge & Co. Lith. (American, 1847 -)