Anonymous
Bram Engelse (Dutch, 20th Century)
Rudolph Dirks (American, 1877-1968)
Anonymous
Fritz Erler (German, 1868–1940)
Anonymous
Anonymous
National Institutes of Health (American, 1887-)
Anonymous
Karol Zyndram Maszkowski (Polish, 1868-1938)
Edward Penfield (American, 1866 - 1925)
H. Delaspre (French, 19th/20th Century)
Anonymous
Auguste Roedel (French, 1859-1900)
Metropolitan Printing Co. (American, 19th/20th Century)
Anonymous
Anonymous
National Institutes of Health (American, 1887-)
Alfred Choubrac (French, 1853-1902)
Edward Penfield (American, 1866 - 1925)
Anonymous
Georges de Feure (French, 1868-1943)
Edward Penfield (American, 1866 - 1925)
National Institutes of Health (American, 1887-)
Pat Keely (English, 1901-1970)
Anonymous
Rachael Romero (Australian, b. 1953)
U.S. Information Agency (American, 1953-1999)
Anonymous
Kurt Schwitters (German, 1887 - 1948)
Willem Pothast (Dutch, 1877-1916)
Anonymous
Victor Clyde Forsythe (American, 1885-1962)
Anonymous
Alonzo Earl Foringer (American, 1878 – 1948)
Manuel Orazi (Italian, 1860-1934)
Anonymous
Burkhard Mangold (Swiss, 1873-1950)
Moriz Jung (Austrian, 1885–1915)
Henri-Gabriel Ibels (French, 1867 - 1936)
National Institutes of Health (American, 1887-)
Frank S. Nicholson (American, 20th Century)
Forbes Co. (American, 19th/20th Century)
Anonymous
National Institutes of Health (American, 1887-)
Jules Chéret (French, 1836-1932)
Anonymous
Gustave Fraipont (French, 1849 - 1923)
U.S. Information Agency (American, 1953-1999)
Anonymous