Frederick Orpen Bower, Sydney Howard Vines
1903 · Fair
€45
Augustin Privat-Deschanel
1903 · Very good
€40
Lewis Foreman Day
1920 · Fine
€70
Hugo D. Froehlich, Bonnie E. Snow
1928 · Very good
€25
Paul Klee
1935 · Very good
€25
Charles Riborg Mann
1916 · Very good
€35
John Ruskin
1900 · Very good
€25
Lascelles Abercrombie
1915 · Fair
€25
Uspenskiĭ Petr Demʹi͡anovich
1935 · Fine
€95
Eskelhoff Carsjen Gravemeijer
1902 · Good · NL
€30
E. T. Whittaker, Sir William McCrae
1906 · Good
€35
Klikspaan
1935 · Fair · NL
€35
William Archer
1925 · Fair
€55
Robert K. Gable, Marian B. Wolf
1926 · Good
€40
Friedrich Fröbel
1913 · Good
€20
Chancellor, William Estabrook
1908 · Good
€70
Sedgwick, Adam
1915 · Very good
€95
A. S. Neill
1935 · Very good
€45
T. J. Bezemer
1903 · Good · NL
€25
Nathan Altshiller-Court
1926 · Fair
€35
John Dewey
1901 · Good
€45
Frans Verschoren
1913 · Good · NL
€20
Balfour Stewart
1919 · Good
€20
Otto Jespersen, Otto Jespersen
1904 · Good
€95
Carl David Tolmé Runge
1916 · Fine
€50
Jan Jacob Bruins
1935 · Very good · NL
€45
Ron Larson
1931 · Fair
€20
Gertrude Stein
1935 · Good
€80
Orville J. Nave
1905 · Fair
€35
P. Wijdenes
1932 · Very good · NL
€60
R. P. J. Tutein Nolthenius
1917 · Very good · NL
€120
M. Buys
1901 · Good · NL
€45
Jan Frederik van Someren
1900 · Very good · NL
€60
Booker T. Washington
1919 · Fine
€105
S. Coolsma
1902 · Good · NL
€80
Owen Johnson
1920 · Good
€25
Alfred North Whitehead
1921 · Good
€20
Gerrit van de Linde
1909 · Fair · NL
€20
W. G. Collingwood
1924 · Fine
€80
John Dewey
1910 · Fine
€30
Theodoor Jorissen
1902 · Good · NL
€30
T. Sundara Rao
1905 · Fair
€15
Jørgen Peter Müller
1902 · Fine
€155
Carel Scharten
1918 · Good · NL
€40
M. Buys
1935 · Good · NL
€25
Emanuel Hiel
1901 · Fine · NL
€130
Shedlock, Marie L.
1929 · Fair
€50
Claude Irwin Palmer
1912 · Good
€20
Frederik Carel Gerretson
1927 · Good · NL
€70
T. Jeffery Parker
1907 · Fair
€55
Wilbur Pardon Bowen
1935 · Good
€50
Maria Montessori
1931 · Good
€110
Ron Larson
1906 · Good
€45
Genevieve Stebbins
1920 · Fair
€20
Hermann Weyl
1921 · Very good
€80
Franz Sales Meyer
1934 · Very good
€40
Bertrand Russell
1935 · Good
€85
Lawson Tait
1926 · Good
€40
Worthington Hooker
1906 · Very good
€30
Moritz Schlick
1928 · Good
€55