Alfred North Whitehead, Bertrand Russell
1911 · Very good
€25
Edouard Goursat
1933 · Very good
€30
P. Wijdenes
1932 · Very good · NL
€60
Henri Poincaré, Nicolae Sfetcu
1919 · Very good
€100
William Ledley Vosburgh
1918 · Very good
€90
Maximilien Marie
1925 · Fine
€35
Ron Larson
1906 · Good
€45
Henri Poincaré
1906 · Very good
€45
Samuel Colman, Samuel Colman
1935 · Good
€30
Balfour Stewart
1919 · Good
€20
Cassius Jackson Keyser
1935 · Good
€50
Joseph William Richards
1907 · Fair
€45
Edmund Husserl
1913 · Good
€45
Ernst Cassirer
1930 · Good
€30
James Joseph Sylvester
1927 · Good
€30
Marcellus Emants
1900 · Very good · NL
€25
Walter Crum Watson
1917 · Fair
€25
Augustin Privat-Deschanel
1903 · Very good
€40
Eugen Horn
1900 · Good · NL
€50
E. T. Whittaker, Sir William McCrae
1906 · Good
€35
Lotta Jean Bogert
1935 · Fair
€20
S. Coolsma
1902 · Good · NL
€80
Edwin A. Burtt
1926 · Very good
€25
A. S. Neill
1933 · Good
€90
Annie Salomons
1923 · Very good · NL
€25
Arthur Wesley Dow
1935 · Good
€25
Wilmore, Albert.
1921 · Good
€35
Garrett Putman Serviss
1913 · Good
€35
A. Wilmer Duff
1916 · Very good
€65
Henri Bergson
1919 · Very good
€35
Garrett Putman Serviss
1909 · Good
€45
Florian Cajori
1929 · Good
€65
Charles Riborg Mann, George Ransom Twiss
1935 · Very good
€30
Jacob Van Beek
1921 · Good · NL
€25
Emmanuel Levinas
1935 · Good
€35
Maurits Esser
1917 · Fair · NL
€15
Mabel Osgood Wright
1903 · Good
€40
Hermann Weyl
1921 · Very good
€80
I. A. Kapandji
1919 · Very good
€85
Frank Julian
1904 · Good
€60
Johan de Meester
1919 · Fair · NL
€35
Bertrand Russell
1920 · Fair
€40
Mary Whiton Calkins
1910 · Very good
€35
H. Koffyberg
1924 · Fair · NL
€20
Garrett Putman Serviss
1911 · Fair
€50
Arthur Stanley Eddington
1924 · Good
€35
L. A. Bakhuis
1902 · Very good · NL
€45
James Martineau
1935 · Very good
€80
G. A. Wilken
1902 · Very good · NL
€100
Plato
1916 · Good
€20
Jan Pieter de Bie
1931 · Good · NL
€65
Gaius
1904 · Fair
€40
Henri Poincaré, Francis Maitland
1907 · Good
€60
Lode Baekelmans
1921 · Fair · NL
€60
Matthew Charteris
1916 · Fine
€80
H. Stanley Redgrove
1911 · Fine
€170
Philip B. Hawk, Hawk, Philip Bovier
1920 · Very good
€40
Garrett Putman Serviss
1907 · Fair
€30
Salisbury, Rollin D.
1909 · Fine
€65
John Aubrey
1915 · Good
€45