Mildred Waltrip (American, 1911-2004)
Anonymous
National Institutes of Health (American, 1887-)
Robert Indiana (American, 1928–2018)
Anonymous
Cornelius Hicks (American, 1898-1930)
Dietmar Winkler (German, 1938 -)
Anonymous
Will Bradley (American, 1868 – 1962)
Anonymous
Anonymous
Anonymous
Anonymous
U.S. Information Agency (American, 1953-1999)
Dransy (French, 1883-1945)
Goes Litho. Co. (American, 19th/20th Century)
Anonymous
Vojtech Preissig (Czech, 1873-1944)
Don Chester Powell (American, 1896-1964)
Pierre Bonnard (French, 1867-1947)
NASA (American, 1958 -)
Anonymous