Walter Crane (English, 1845 - 1915)
Jean d'Ylen (French, 1886-1938)
Anonymous
Anonymous
O.C Malcolm (American, 19th/20th century)
Anonymous
Edward McKnight Kauffer (American, 1890-1954)
Anonymous
Nikki Schumann (American, 20th Century)
Anonymous
Reinier Willem Petrus de Vries (Dutch, 1874 - 1952)
Lucien Lefèvre (French, 1850-1902)
Anonymous
National Institutes of Health (American, 1887-)
Anonymous
Anonymous
Edward Penfield (American, 1866 - 1925)
Ramón Casas (Spanish, 1866 – 1932)
Will Bradley (American, 1868 – 1962)
Cecil Beall (American, 1892–1970)
Eric Rohman (Swedish, 1891 - 1949)
National Institutes of Health (American, 1887-)
U.S. Information Agency (American, 1953-1999)
H. Schmuck (Polish, 18th/19th Century)
George Illian (American, 1894-1932)
Jolijn van de Wouw (Dutch, 1942-2001)