Thomas Henry Huxley
1889 · Fair
€30
Lewis Foreman Day
1920 · Fine
€70
Charles Hutton
1812 · Very good
€245
Claude Irwin Palmer
1912 · Good
€20
Margaret Bryan
1800 · Good
€210
Oliver Byrne
1877 · Fine
€75
Friedrich Fröbel
1913 · Good
€20
Jørgen Peter Müller
1902 · Fine
€155
René Descartes
1912 · Very good
€85
Michael Faraday
1842 · Fair
€60
Walsh, Michael
1808 · Very good
€180
John Joseph Griffin
1832 · Good
€225
A. S. Neill
1935 · Very good
€45
Maria Montessori
1931 · Good
€110
Denison Olmsted
1868 · Good
€60
W. W. Rouse Ball
1935 · Fair
€15
Morgan, John
1780 · Fair
€130
John Hamilton Moore
1799 · Fine
€740
Herbert Spencer
1882 · Very good
€105
William Thomas Brande
1820 · Fine
€190
R. Fletcher
1922 · Good
€20
Catharine Esther Beecher
1847 · Good
€160
John Dewey
1901 · Good
€45
Daniel Oliver
1872 · Good
€65
Alexander Tweedie, System
1841 · Fine
€160
Miller, Samuel
1827 · Fine
€155
Martin Klopstock
1911 · Good
€35
William Halfpenny
1781 · Very good
€600
William Archer Butler
1857 · Fair
€25
Edwin Emery Slosson
1935 · Very good
€40
Nathaniel Bowditch
1869 · Fair
€125
Thorstein Veblen, Teichgraeber, Richard F., III
1932 · Good
€20
Thomas Simpson
1751 · Very good
€660
Alfred Daniell
1888 · Good
€70
John Ruskin
1857 · Fine
€100
Gerrit Cornelis August Valewink
1918 · Fine · NL
€85
Hegeler Institute
1924 · Fine
€100
Thomas Hughes
1819 · Good
€95
Garrett Putman Serviss
1935 · Good
€95
Marcet Mrs
1815 · Good
€235
Burnett Hillman Streeter, R. Brook
1919 · Fair
€15
William Houston Greene
1884 · Very good
€80
Elizabeth Prentiss
1863 · Good
€105
Elias Loomis
1883 · Very good
€120
William Kingdon Clifford
1914 · Fair
€35
Silvanus Phillips Thompson
1935 · Very good
€35
Jean-Antoine-Nicolas de Caritat marquis de Condorcet
1816 · Good
€270
Gerrit van de Linde
1909 · Fair · NL
€20
William Strunk, Jr., E. B. White
1920 · Very good
€85
Francis Bacon
1648 · Good
€725
Koninklijk Instituut voor de Taal-, Land- en Volkenkunde van Nederlandsch-Indië.
1915 · Good · NL
€20
Frank Hall Thorp
1906 · Good
€25
George Boole
1882 · Fine
€65
Erasmus Darwin
1808 · Fine
€280
James Copland
1851 · Fair
€100
Charles Lamb
1810 · Very good
€215
Ernest Shurtleff Holmes
1935 · Fair
€15
Goff, E. S.
1899 · Very good
€70
Marcet Mrs
1828 · Good
€155
John Ruskin
1847 · Very good
€325