
Alfred Offner (Austrian, 1879–1937)

Jean d'Ylen (French, 1886-1938)

Publicité Wall (French, 20th Century)

Brynolf Wennerberg (Swedish, 1866-1950)

National Institutes of Health (American, 1887-)

Albert Guillaume (French, 1873 – 1942)

Reinier Willem Petrus de Vries (Dutch, 1874 - 1952)

Anonymous

Laboratoires Le Brun (French, 20th Century)

Henry Gerbault (French, 1863-1930)

Ritchey Lith. Corp. (American, 19th/20th Century)

Reijer Stolk (Dutch, 1896 - 1945)

David Allen & Sons (Irish, 19th/20th century)

Anonymous

Anonymous

Lith. Van Geleyn (French, 19th/20th century)

U.S. Information Agency (American, 1953-1999)

Laboratoires du docteur A. Vermersch (French, 20th Century)