By Arva
Julius Klinger (Austrian, 1876 – 1942)
Emil Pirchan (Austrian, 1884-1957)
Georges Meunier (French, 1869-1942)
Laboratoires Badrial (French, 20th Century)
George Frederick Scotson-Clark (American, 1873 - 1973)
Edward Ancourt (French, 1841-?)
Anonymous