B. M Channing (American, 19th/20th century)
Anonymous
George Wharton Edwards (American, 1859-1950)
Anonymous
Anonymous
Walter E. Spradberry (English, 1889-1969)
Benjamin Roubaud (French, 1811 - 1847)
National Institutes of Health (American, 1887-)
Anonymous
Cecil Charles Windsor Aldin (English, 1870 – 1935)
H.J. Reandeau (American, 19th/20th Century)
Anonymous
U.S. Lithograph Co. (American, 19th/20th Century)
Anonymous
National Institutes of Health (American, 1887-)
U.S. Information Agency (American, 1953-1999)
Moriz Jung (Austrian, 1885–1915)
Pat Keely (English, 1901-1970)
John Sloan (American, 1871 - 1951)
Eric Rohman (Swedish, 1891 - 1949)
Anonymous
Adolph Treidler (American, 1886–1981)
Henry Summer Watson (American, 1868-1933)
National Institutes of Health (American, 1887-)
Leonetto Cappiello (Italian, 1875-1942)