Percy J. Billinghurst (English, 1871-1933)
Albert Engström (Swedish, 1869 – 1940)
Mary Eliza Joy Haweis (English, 1848 – 1898)
Udo Keppler (American, 1872 – 1956)
John Elsas (German, 1851–1935)
William Heath Robinson (English, 1872-1944)
Haris Petie (American, 1915-)
Albert Ilg (Austrian, 1847-1896)
Ferdinand Hodler (Swiss, 1853-1918)
Warwick Goble (English, 1862 – 1943)
Joan Balfour Payne (American, 1923-1973)
Henry Justice Ford (English, 1860–1941)
Louis Dalrymple (American, 1866 – 1905)
Anonymous
Paul Wenzel (Publisher) (American, 19th Century)
Flavius Vegetius Renatus (Italian, 4th century)
Udo Keppler (American, 1872 – 1956)
Joseph Ferdinand Keppler (American, 1838 – 1894)
Henry Thomas Alken (English, 1785 – 1851)
Henri Boutet (French, 1851-1919)
Edward Penfield (American, 1866 - 1925)
Carl Becker (German, 19th Century)
Albert Ilg (Austrian, 1847-1896)
Theo Nieuwenhuis (Dutch, 1866-1951)
Robert Reid (American, 1862-1929)
John Elsas (German, 1851–1935)
Anonymous
Karel Klíč (Czech, 1841-1926)
Fedor Grigoryevich Solntsev (Russian, 1801 – 1892)
Jules Bourgoin (French, 1838-1908)
Kay Rasmus Nielsen (Danish, 1886-1957)
Joris Hoefnagel (Flemish, 1542-1600)
Haris Petie (American, 1915-)
Eli Lilly & Company (American, 19th/20th Century)
John Rea Neill (American, 1877 - 1943)
John Elsas (German, 1851–1935)
Elihu Vedder (American, 1836-1923)
Fedor Grigoryevich Solntsev (Russian, 1801 – 1892)
Bernhard Gillam (American, 1856 – 1896)