John Young (English, 1755–1825)
Zut (Alfred Le Petit) (French, 1841-1909)
John Elsas (German, 1851–1935)
Gifford Pinchot (American, 1865-1946)
Marion T. Ross (American, 1881-1937)
Alphonse Mucha (Czech, 1860-1939)
Janus de Winter (Dutch, 1882-1951)
Emile Bernard (French, 1868-1941)
Charles Dana Gibson (American, 1867 - 1944)
Simon Moulijn (Dutch, 1866–1948)
Martin Gerlach (German, 1846-1918)
Fedor Grigoryevich Solntsev (Russian, 1801 – 1892)
Kay Rasmus Nielsen (Danish, 1886-1957)
Gustave Doré (French, 1832-1883)
Eduard Thöny (German, 1866 - 1950)
Édouard Guichard (French, 1815-1889)
Wilhelm Diebener (German, ? - 1922)
Flavius Vegetius Renatus (Italian, 4th century)
Paul Louis de Giafferri (French, 20th Century)
Anonymous
Ernst Haeckel (German, 1834-1919)