
Will Bradley (American, 1868 – 1962)

Frank Xavier Leyendecker (American, 1876-1924)

Jean d'Ylen (French, 1886-1938)

Anonymous

Anonymous

Ludwig Lutz Ehrenberger (Austrian, 1878-1950)

Anonymous

Laboratoires de l'Oliphedrol (French, 20th Century)

James Fuller Queen (American, 1820-1886)

Anonymous

Pat Keely (English, 1901-1970)

Anonymous

Henri Boulanger Gray (French, 1858-1924)

Anonymous

Johann Vincenz Cissarz (German, 1873-1942)

Bronisław Wiśniewski (Polish, 1866-1938)

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

Orson Lowell (American, 1871-1956)

Hans Schleger (German, 1898 - 1976)

Amsterdam UNA (Dutch, 20th Century)

Laboratoire d'actino-biologie (French, 20th Century)

Henri-Gabriel Ibels (French, 1867 - 1936)

Alfred Choubrac (French, 1853-1902)