Henry Ernest Dudeney
1935 · Fair
€25
John A. Suchocki
1924 · Good
€25
Eric Temple Bell
1920 · Good
€25
Klikspaan
1935 · Fair · NL
€35
Parmenides.
1902 · Fair
€35
Watson, William
1929 · Fair
€50
Lewis Mumford
1935 · Very good
€25
Matthias Ehrgott
1912 · Very good
€50
Denison Olmsted
1857 · Fair
€40
William Henry Bragg
1925 · Fair
€20
Charles David Hodgman
1916 · Fine
€45
Ernst Cassirer, Claus Rosenkranz
1935 · Good
€25
Charles Benedict Davenport
1935 · Fair
€45
W. W. Rouse Ball
1935 · Fair
€15
Peter Barlow
1872 · Good
€45
Jules Bernard Luys
1909 · Good
€25
P. L. Macdougall
1873 · Fair
€50
Ernst Cassirer
1930 · Good
€30
Percival Lowell
1907 · Very good
€25
Garrett Putman Serviss
1913 · Good
€35
Steven S. Zumdahl
1915 · Good
€45
Lotta Jean Bogert
1935 · Fair
€20
Sextus Empiricus.
1887 · Good
€40
Nathaniel Southgate Shaler
1915 · Fair
€30
Arthur Stanley Eddington
1924 · Good
€35
Charles John Holmes
1935 · Very good
€35
Henri Bergson, Nancy Margaret Paul
1902 · Good
€45
Henri Poincaré
1910 · Fine
€30
Tito Vignoli
1885 · Good
€50
R. G. Collingwood
1929 · Good
€35
Ronald Aylmer Fisher
1932 · Very good
€40
Wilmore, Albert.
1921 · Good
€35
Friedrich Fröbel
1919 · Good
€20
Max Born
1935 · Good
€25
Henry Watts
1893 · Good
€35
Steven S. Zumdahl
1915 · Fine
€45
S. Laing
1916 · Good
€50
Harry B. Gray, Richard Earl Dickerson
1905 · Good
€25
Hastings Rashdall
1923 · Very good
€25
William H. Chapin
1933 · Very good
€35
Jules Bernard Luys
1935 · Fair
€30
Steven S. Zumdahl
1907 · Very good
€25
Kimball, Arthur L.
1935 · Very good
€25
F. Matthias Alexander
1935 · Fine
€35
C. Claus, Carl Friedrich Wilhelm Claus
1883 · Good
€40
Lawrence Sklar
1911 · Very good
€30
Joseph Maclise
1869 · Good
€35
Francis Bacon
1930 · Fair
€45
Edward Livingston Youmans
1896 · Good
€50
Marcellus Emants
1900 · Very good · NL
€25
Marcellus Emants
1904 · Good · NL
€20
Garrett Putman Serviss
1909 · Good
€45
Vreeswijk, Johannes Adrianus, jr.
1909 · Good · NL
€25
W. H. R. Rivers
1927 · Good
€30
E. T. Whittaker, Sir William McCrae
1906 · Good
€35
Epictetus
1920 · Good
€20
Morris Raphael Cohen
1935 · Fine
€35
J. H. Poynting
1916 · Very good
€45
Victor von Richter
1916 · Good
€25
Albert Einstein, G. B. Jeffery
1926 · Fair
€25