F. Matthias Alexander
1935 · Fine
€35
H. Newell Martin
1903 · Fine
€40
Rudolf Otto
1929 · Fine
€35
Nicolass Muller
1915 · Fine · NL
€35
Richard von Krafft-Ebing, Krafft/
1892 · Fine
€215
H. Newell Martin, Ernest Gale Martin
1904 · Fine
€40
Johann Caspar Lavater
1787 · Fine
€685
Mark Twain
1919 · Fine
€65
McDougall, William
1917 · Fine
€100
John Abercrombie, Jacob Abbott
1832 · Fine
€180
Jørgen Peter Müller
1902 · Fine
€155
Ika A. Thomése
1935 · Fine · NL
€35
Carlton C. Curtis
1907 · Fine
€50
Plato
1835 · Fine
€145
Maria Edgeworth
1839 · Fine
€205
Jane Haldimand Marcet
1820 · Fine
€365
Josiah Royce
1928 · Fine
€125
Morris Raphael Cohen
1935 · Fine
€35
Samuel Stanhope Smith
1793 · Fine
€925
Yogananda Paramahansa
1931 · Fine
€125
Schwegler, Albert
1864 · Fine
€120
William Whewell
1848 · Fine
€145
Aristotle
1893 · Fine
€175
John Dewey
1910 · Fine
€30
Hilaire Belloc
1929 · Fine
€35
René Descartes
1655 · Fine
€1,820
Ira Warren
1874 · Fine
€140
Calvin Cutter
1871 · Fine
€80
Salisbury, Rollin D.
1909 · Fine
€65
Alexander Tweedie, System
1841 · Fine
€160
John Ruskin
1924 · Fine
€105
Calvin Cutter
1849 · Fine
€420
Eldridge Cleaver, E. Cleaver
1898 · Fine
€325
Frederick Soddy
1935 · Fine
€30
John Galsworthy
1935 · Fine
€105
Uspenskiĭ Petr Demʹi͡anovich
1935 · Fine
€95
Herbert Spencer
1862 · Fine
€105
Jesse Feiring Williams
1924 · Fine
€35
William Beebe
1935 · Fine
€115
Cyriel Buysse
1926 · Fine · NL
€140
C. Judson Herrick
1931 · Fine
€55
Arthur van Schendel
1921 · Fine · NL
€35
John D. Godman
1827 · Fine
€125
Peter Kropotkin
1910 · Fine
€50
Emanuel Hiel
1901 · Fine · NL
€130
Plato
1562 · Fine
€1,785
Hegeler Institute
1924 · Fine
€100
Carl David Tolmé Runge
1916 · Fine
€50
Mark Twain
1917 · Fine
€100
Erwin Madelung
1935 · Fine
€40
Friedrich Engels
1905 · Fine
€80
Camille Flammarion
1887 · Fine
€80
James Martineau
1923 · Fine
€40
James Whitcomb Riley
1911 · Fine
€125
James Syme
1833 · Fine
€220
Jane Haldimand Marcet
1809 · Fine
€255
James Jackson Jarves
1879 · Fine
€210
Louis Couperus
1895 · Fine · NL
€65
Clifford Whittingham Beers
1911 · Fine
€70
Antoni Christiaan Winand Staring
1900 · Fine · NL
€30