E. L. Cousyn (French, ?-1926)
National Library of Medicine (American, 1836-)
Henriëtte Willebeek le Mair (Dutch, 1889 – 1966)
Henri Thiriet (French, 1873-1946)
Charles Warde Traver (American, 1870-1945)
Bureau of the Census (American, 1902 - )
Will R. Barnes (American, ?-1939)
Adth van Ooijen (Dutch, 20th Century)
Anonymous
Edward Mason Eggleston (American, 1882 - 1941)
National Institutes of Health (American, 1887-)
Anonymous
Louis Rhead (American, 1857-1926)
Angelo Tartaglia (American, 20th Century)
Urban Janke (Austrian, 1887-1914)
Leonetto Cappiello (Italian, 1875-1942)
Armand Rassenfosse (Belgian, 1862 - 1934)
Ferdinand Lunel (French, 1857 - 1933)
U.S. Information Agency (American, 1953-1999)
William Carqueville (American, 1871-1946)
Theo Nieuwenhuis (Dutch, 1866-1951)
Reijer Stolk (Dutch, 1896 - 1945)
Anonymous
Anonymous
Wassily Kandinsky (Russian, 1866 - 1944)
Theo van Hoytema (Dutch, 1863-1917)
Albert Guillaume (French, 1873 – 1942)