Cassius Jackson Keyser
1935 · Good
€50
Marcellus Emants
1900 · Very good · NL
€25
John Dewey
1910 · Fine
€30
Bruno F. Schneider
1921 · Good
€25
Aron Salomon Coltof
1918 · Very good · NL
€55
Octave Mirbeau
1933 · Good
€20
Thomas Aquinas Sister, originally Agnes O'Neil
1934 · Good
€75
Clive Bell
1935 · Very good
€120
Grant Allen
1910 · Good
€40
H. Newell Martin
1903 · Fine
€40
Frits Lugt
1920 · Fair · NL
€20
Henri Poincaré, Nicolae Sfetcu
1919 · Very good
€100
Stefan Zweig
1935 · Good
€35
Ida B. Wells-Barnett, I. Garland Penn
1914 · Fair
€35
Stephen Walter Ranson
1933 · Very good
€40
Annie Salomons
1923 · Very good · NL
€25
Jacob Van Beek
1921 · Good · NL
€25
H. Newell Martin
1908 · Very good
€35
Walter Crane
1911 · Very good · NL
€25
Ernst Cassirer
1930 · Good
€30
Rudolf Steiner, Max Gysi
1910 · Very good
€25
A. S. Neill
1933 · Good
€90
Tine de Kruyff-Gobius
1912 · Good · NL
€55
Rebecca Crumpler
1905 · Good
€35
Hermann Weyl
1921 · Very good
€80
Renée Hirsch
1935 · Good · NL
€50
Alfred North Whitehead, Bertrand Russell
1911 · Very good
€25
Abraham Kuyper
1911 · Fine · NL
€30
Florian Cajori
1929 · Good
€65
Verney Lovett Cameron, Daniel Oliver
1912 · Good
€25
Richard C. Cabot
1908 · Good
€40
G. A. Henty
1911 · Very good
€115
Mabel Osgood Wright
1903 · Good
€40
Harm Bouwman
1916 · Very good · NL
€30
Arthur Wesley Dow
1935 · Good
€25
Patrick Geddes
1903 · Good
€70
Heraclitus of Ephesus
1918 · Good
€20
Garrett Putman Serviss
1907 · Fair
€30
Garrett Putman Serviss
1913 · Good
€35
Johan de Meester
1919 · Fair · NL
€35
G. A. Wilken
1902 · Very good · NL
€100
L. A. Bakhuis
1902 · Very good · NL
€45
G. A. Henty
1926 · Good
€20
Henry David Thoreau
1935 · Good
€30
Franciscus Anthonius Bijvoet
1906 · Good · NL
€25
Arthur A. Noyes
1935 · Good
€20
Charles Riborg Mann, George Ransom Twiss
1935 · Very good
€30
James Martineau
1935 · Very good
€80
A. Wilmer Duff
1916 · Very good
€65
Robert Fruin
1923 · Good · NL
€30
John H. Vanderpoel
1935 · Good
€20
I. F. Henderson
1926 · Very good
€40
Thomas Walker Arnold
1918 · Good
€85
Edward Carpenter
1906 · Good
€25
Le Roy Lewis
1914 · Good
€20
José Ortega y Gasset
1931 · Very good
€60
Erwin Rohde
1902 · Fair
€15
Samuel Muller
1915 · Very good · NL
€80
John Galsworthy
1935 · Fine
€105
L. Th Mayer
1910 · Good · NL
€25