
Bertold Loffler (Austrian, 1874-1960)

Wybo Meijer (Dutch, 1885-1942)

Otto Barth (Austrian, 1876-1916)

Ludwig Koch (Austrian, 1866–1934)

Albert Welti (Swiss, 1862–1912)

Rudolf Urech (Swiss, 1888 – 1951)

Ludwig Koch (Austrian, 1866–1934)

Anonymous

Anonymous

National Institutes of Health (American, 1887-)

Laboratoires Drouet & Plet (French, 20th Century)

Julius Klinger (Austrian, 1876 – 1942)

National Institutes of Health (American, 1887-)

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

Laboratoires Charvoz (French, 20th Century)

Laboratoire Galbrun (French, 20th Century)

Laboratoire Galbrun (French, 20th Century)

Laboratoire J. Logeais (French, 20th Century)

Laboratoire J. Logeais (French, 20th Century)