Richard Watson
1830 · Fine
€145
Albrecht von Haller
1748 · Very good
€600
Jørgen Peter Müller
1902 · Fine
€155
Maatschappij der Nederlandse Letterkunde te Leiden
1811 · Fine · NL
€180
Moyse Charas
1677 · Very good
€1,080
Roger Eliot Fry
1921 · Fair
€55
Cornelius Ryan
1935 · Very good
€50
Edwin Emery Slosson
1935 · Very good
€40
Rudolf Steiner, Max Gysi
1910 · Very good
€25
Thomas P. Jones
1868 · Good
€70
John Frederick William Herschel
1854 · Good
€35
Aristotle
1561 · Very good
€915
William Thomson Kelvin
1889 · Very good
€165
Andrew Wakely
1710 · Good
€800
Friedrich Fröbel
1919 · Good
€20
Cicero
1728 · Good
€180
Walter Hilton, Hilton
1528 · Very good
€620
J. L. Comstock
1843 · Good
€270
A. S. Neill
1935 · Very good
€45
Thomas Henry Huxley
1901 · Good
€35
Alexander Findlay
1919 · Good
€75
James Jackson Jarves
1879 · Fine
€210
C. Judson Herrick
1931 · Fine
€55
James Barr Walker
1850 · Good
€60
Lewis Beesly, Thomas Baillie Johnston
1928 · Fine
€50
Kimball, Arthur L.
1935 · Very good
€25
Peter Kropotkin
1931 · Very good
€60
Frederick Soddy
1935 · Fine
€30
Ludwig Wittgenstein, Isidoro Reguera Pérez
1935 · Good
€45
Dionysius Lardner
1852 · Good
€110
Julien Offray de La Mettrie, Bernard A. Laska
1770 · Good
€370
Immanuel Kant
1801 · Good
€95
Hammarsten, Olof
1894 · Very good
€110
Immanuel Kant
1885 · Good
€190
Parkes, Samuel
1817 · Good
€110
Heinrich Cornelius Agrippa von Nettesheim
1535 · Good
€915
Girolamo Ruscelli
1571 · Fair
€590
Francis Fuller
1735 · Very good
€265
Arthur W. Dow, Joseph Masheck
1918 · Very good
€45
Lorenz Heister
1773 · Very good
€560
Richard A. Proctor
1918 · Good
€50
Alfred Swaine Taylor
1858 · Very good
€45
Alexander Tweedie, System
1841 · Fine
€160
F. Max Müller
1884 · Good
€40
Colin MacKenzie
1870 · Very good
€80
Alexander Findlay
1911 · Very good
€35
Georg Wilhelm Friedrich Hegel
1813 · Very good
€110
Benjamin Franklin
1752 · Very good
€720
Houston Stewart Chamberlain
1902 · Good
€45
John Hamilton Moore
1799 · Fine
€740
Ralph Rodney Root
1935 · Fair
€25
John Russell Reynolds, Henry Hartshorne
1877 · Good
€35
William Gilbert
1610 · Very good
€895
William Shakespeare, David Wellens (editor)
1907 · Good
€50
Eduard Hanslick
1870 · Good
€60
Alexander Jamieson
1853 · Very good
€45
D. R. Hay
1874 · Very good
€70
Luther Holden
1865 · Fine
€130
Ernest Albee
1906 · Good
€20
Victor von Richter
1916 · Good
€25