Thomas Henry Huxley
1889 · Fair
€30
Claude Irwin Palmer
1912 · Good
€20
Friedrich Fröbel
1913 · Good
€20
A. S. Neill
1935 · Very good
€45
W. W. Rouse Ball
1935 · Fair
€15
R. Fletcher
1922 · Good
€20
John Dewey
1901 · Good
€45
Martin Klopstock
1911 · Good
€35
William Archer Butler
1857 · Fair
€25
Edwin Emery Slosson
1935 · Very good
€40
Thorstein Veblen, Teichgraeber, Richard F., III
1932 · Good
€20
Burnett Hillman Streeter, R. Brook
1919 · Fair
€15
William Kingdon Clifford
1914 · Fair
€35
Silvanus Phillips Thompson
1935 · Very good
€35
Gerrit van de Linde
1909 · Fair · NL
€20
Koninklijk Instituut voor de Taal-, Land- en Volkenkunde van Nederlandsch-Indië.
1915 · Good · NL
€20
Frank Hall Thorp
1906 · Good
€25
Ernest Shurtleff Holmes
1935 · Fair
€15
Peter Willem Hendrik Truyen
1901 · Fair · NL
€15
Herbert Spencer
1867 · Good
€45
Alpheus S. Packard
1904 · Good
€25
Frederick Soddy
1935 · Fine
€30
Walter E. Thirring
1906 · Fine
€40
Thomas Troward
1922 · Good
€30