
Ernest Buval (French, 1839-1915)

Ludwig Hohlwein (German, 1874 – 1949)

Bristow Adams (American, 1875 – 1956)

Pal (Jean de Paleologue) (Romanian, 1855 - 1942)

Eduardo Ramírez Villamizar (Colombian, 1922-2004)

Jules Chéret (French, 1836-1932)

Anonymous

NASA (American, 1958 -)

Henri Privat-Livemont (Belgian, 1861–1936)

Maurice Louis Henri Neumont (French, 1868-1930)

Henri Meunier (Belgian, 1873-1922)

Laboratoires de la Passiflorine (French, 20th Century)

Laboratoire M. de Rive (French, 20th Century)

Antoni Wajwód (Polish, 1905-1944)

Anonymous

Anonymous

Léon Choubrac (French, 1847 – 1885)

Plinio Codognato (Italian, 1878-1940)

Anonymous

Howard Chandler Christy (American, 1873 - 1952)