Bureau of the Census (American, 1902 - )
U.S. Information Agency (American, 1953-1999)
Anonymous
Anonymous
Trautmann, Bailey & Blampey (American, 19th/20th Century)
National Institutes of Health (American, 1887-)
National Institutes of Health (American, 1887-)
National Institutes of Health (American, 1887-)
Anonymous
Edward Penfield (American, 1866 - 1925)
Ministry of Agriculture, Fisheries and Food (English, 1889-)
Anonymous
Fred Taylor (English, 1875-1963)
Edward Penfield (American, 1866 - 1925)
H. Sophie Loury (American, active 1890-1900)
Jules-Alexandre Grün (French, 1868-1934)
Durex Information Service for Sexual Health (American, 20th century)
Richard Nicolaüs Roland Holst (Dutch, 1868 - 1938)
Peter Newell (American, 1862 – 1924)
Joseph Gould (American, 1880 - 1935)
Anonymous