Carl David Tolmé Runge
1916 · Fine
€50
John Dewey
1910 · Fine
€30
Nicolass Muller
1915 · Fine · NL
€35
Antoni Christiaan Winand Staring
1900 · Fine · NL
€30
Klaas Johan Pen
1935 · Fine · NL
€35
Walter E. Thirring
1906 · Fine
€40
Mary Greer Conklin
1923 · Fine
€40
Eduard Strasburger
1935 · Fine
€45
Rudolf Otto
1929 · Fine
€35
John Willis Clark
1918 · Fine
€50
Erwin Madelung
1935 · Fine
€40
Rudolf Steiner
1932 · Fine
€40
A. A. Milne
1926 · Fine
€30
E. B. Jamieson
1914 · Fine
€40
Eduard Strasburger
1924 · Fine
€40
Ika A. Thomése
1935 · Fine · NL
€35
F. Matthias Alexander
1935 · Fine
€35
Steven S. Zumdahl
1915 · Fine
€45
Theodore Shennan
1912 · Fine
€45
Jesse Feiring Williams
1924 · Fine
€35
Rudyard Kipling
1907 · Fine
€40
Guillaume Groen van Prinsterer
1903 · Fine · NL
€30
H. Newell Martin
1903 · Fine
€40
Wood, Robert Williams
1919 · Fine
€40
Henry Sinclair Hall, Samuel R. Knight
1904 · Fine
€30
L. A. Waterbury
1913 · Fine
€45
Thompson, D'Arcy Wentworth
1931 · Fine
€35
Karl Pearson
1934 · Fine
€30
Romain Rolland
1918 · Fine
€50
Abraham Kuyper
1911 · Fine · NL
€30
Alfred Russel Wallace
1935 · Fine
€35
Maurice Henry Hewlett
1926 · Fine
€45
J. Arthur Thomson
1909 · Fine
€45
Jan van Leeuwen
1935 · Fine · NL
€45
Alfred North Whitehead
1930 · Fine
€40
James Martineau
1923 · Fine
€40
Ernst Heinrich Philipp August Haeckel
1900 · Fine
€30
Hilaire Belloc
1929 · Fine
€35
Frederick Soddy
1935 · Fine
€30
Maximilien Marie
1925 · Fine
€35
John Reed
1932 · Fine
€40
G. H. Hardy, J. G. Leathem
1916 · Fine
€35
Ernest Thompson Seton
1929 · Fine
€35
W. L. van Helten
1935 · Fine · NL
€35
George Bernard Shaw
1927 · Fine
€30
George Sydenham Clarke
1910 · Fine
€30
Carlton C. Curtis
1907 · Fine
€50
Arthur van Schendel
1921 · Fine · NL
€35
Jean-Jacques Rousseau
1927 · Fine
€30
H. Newell Martin, Ernest Gale Martin
1904 · Fine
€40
Inge, William Ralph
1926 · Fine
€50
George M. Gould
1900 · Fine
€35
Henri Poincaré
1910 · Fine
€30
Smithsonian Institution
1935 · Fine
€45
Thornton W. Burgess, Harrison Cady
1931 · Fine
€30
Henry Gray F.R.S., Henry Vandyke Carter
1915 · Fine
€50
Pieter Joseph Cruse
1911 · Fine · NL
€30
Morris Raphael Cohen
1935 · Fine
€35
Dorothy Canfield Fisher
1931 · Fine
€35
Ivo Struyf
1909 · Fine · NL
€40