Cassius Jackson Keyser
1935 · Good
€50
Edouard Goursat
1933 · Very good
€30
Joseph William Richards
1907 · Fair
€45
Florian Cajori
1929 · Good
€65
Alfred North Whitehead, Bertrand Russell
1911 · Very good
€25
Sextus Empiricus.
1887 · Good
€40
Joseph Louis Lagrange, Thomas J. McCormack
1898 · Good
€40
Ron Larson
1906 · Good
€45
Mary Whiton Calkins
1910 · Very good
€35
Michael Faraday
1874 · Fine
€65
Samuel Colman, Samuel Colman
1935 · Good
€30
Heraclitus of Ephesus
1918 · Good
€20
Charles Riborg Mann
1916 · Very good
€35
W. W. Rouse Ball, H. S. M. Coxeter
1898 · Fair
€125
William Ledley Vosburgh
1918 · Very good
€90
George Boole
1856 · Good
€90
Augustin Privat-Deschanel
1903 · Very good
€40
Alfred Payson Gage
1891 · Fair
€85
William Allen Whitworth
1870 · Very good
€55
James Clerk Maxwell
1881 · Good
€125
James Joseph Sylvester
1927 · Good
€30
Ernst Cassirer
1930 · Good
€30
A. Wilmer Duff
1916 · Very good
€65
Richard C. Cabot
1908 · Good
€40
Maximilien Marie
1925 · Fine
€35
Heinrich Durège, George Egbert Fisher
1867 · Good
€60
James Martineau
1935 · Very good
€80
Balfour Stewart
1919 · Good
€20
Henri Poincaré, Nicolae Sfetcu
1919 · Very good
€100
Edwin A. Burtt
1926 · Very good
€25
Arthur Stanley Eddington
1924 · Good
€35
Charles Riborg Mann, George Ransom Twiss
1935 · Very good
€30
E. T. Whittaker, Sir William McCrae
1906 · Good
€35
Henri Bergson
1919 · Very good
€35
Aristotle
1882 · Good
€95
Frank Julian
1904 · Good
€60
Charles George Herbermann, Edward Aloysius Pace
1935 · Fair
€15
Garrett Putman Serviss
1913 · Good
€35
Routh, Edward John
1920 · Good
€60
Thomas Aquinas Sister, originally Agnes O'Neil
1934 · Good
€75
Erwin Rohde
1902 · Fair
€15
Sir William Hamilton, 9th Baronet
1859 · Good
€75
Garrett Putman Serviss
1909 · Good
€45
Parmenides.
1902 · Fair
€35
John Ruskin
1888 · Fair
€55
Brooks Adams
1897 · Fine
€190
Uspenskiĭ Petr Demʹi͡anovich
1935 · Fine
€95
Hitchcock, Edward
1860 · Very good
€100
Lotta Jean Bogert
1935 · Fair
€20
George MacDonald
1894 · Fair
€85
Garrett Putman Serviss
1907 · Fair
€30
James Jackson Jarves
1879 · Fine
€210
Salisbury, Rollin D.
1909 · Fine
€65
René Descartes
1860 · Fair
€55
Arthur A. Noyes
1935 · Good
€20
John Edwin Sandys, Sir
1932 · Very good
€25
H. Stanley Redgrove
1911 · Fine
€170
Samuel Pierpont Langley
1889 · Good
€45
Grant, Robert
1852 · Fine
€130
William Chase Stevens
1909 · Good
€20