National Institutes of Health (American, 1887-)
NASA (American, 1958 -)
A. Lelong (French, 1871-1933)
Zygmunt Glinicki (Polish, 1898–1940)
Anonymous
Gustave Boulanger (French, 1824-1888)
Don Chester Powell (American, 1896-1964)
Rachael Romero (Australian, b. 1953)
Anonymous
Władysław Roguski (Polish, 1890-1940)
Anonymous
Robert Motherwell (American, 1915 - 1991)
Frederick Richardson (American, 1862-1937)
L. Mosquera (American, 19th/20th Century)
Lucien Metivet (French, 1863-1932)
U.S.. Department of Health & Human Services (American, 1953-)
René Péan (French, 1875-1945)
James Matthew Barrie (Scottish, 1860–1937)
Anonymous
Antonio Arias Bernal (Mexican, 1914-1960)
Strobridge & Co. Lith. (American, 1847 -)
Anonymous
Anonymous