Henri van Heurck
1869 · Very good · NL
€75
I. F. Henderson
1926 · Very good
€40
Alfred Russel Wallace
1881 · Very good
€250
Florian Cajori
1929 · Good
€65
H. G. Wells
1911 · Very good
€40
Annie Salomons
1923 · Very good · NL
€25
Arthur Stanley Eddington
1924 · Good
€35
Ernest Thompson Seton
1929 · Fine
€35
George Fleming
1877 · Fine
€65
Henri Bergson, CHAILLAND
1907 · Good
€35
Jacob Van Beek
1921 · Good · NL
€25
Arie Mijnlieff
1881 · Good · NL
€120
Arthur van Schendel
1909 · Fair · NL
€45
Eskelhoff Carsjen Gravemeijer
1902 · Good · NL
€30
Bertrand Russell
1916 · Fair
€45
J. Greig Smith
1900 · Fine
€120
Harm Bouwman
1916 · Very good · NL
€30
Parmenides.
1902 · Fair
€35
Arthur Schopenhauer
1912 · Good
€30
Ernst Heinrich Philipp August Haeckel
1897 · Good
€125
J. C. Rullmann
1935 · Very good · NL
€75
Jean Pauline Smith
1935 · Very good
€25
Balfour Stewart
1919 · Good
€20
John Cleland
1885 · Good
€80
A. Wilmer Duff
1916 · Very good
€65
Walter Rauschenbusch
1929 · Very good
€35
Vries, Hugo de
1890 · Fine · NL
€105
Gilman Arthur Drew
1921 · Very good
€35
F. Max Müller
1910 · Very good
€35
Clive Bell
1935 · Very good
€120
Abraham Roger
1935 · Good · NL
€40
Hermann Löns
1903 · Very good · NL
€155
K. F. Holle
1877 · Very good · NL
€95
Garrett Putman Serviss
1911 · Fair
€50
Garrett Putman Serviss
1907 · Fair
€30
Marcellus Emants
1900 · Very good · NL
€25
William Bateson, Gregor Mendel
1906 · Good
€95
Abraham Kuyper
1869 · Very good · NL
€165
Ernst Heinrich Philipp August Haeckel
1911 · Very good
€110
Augustin Privat-Deschanel
1903 · Very good
€40
Brooks Adams
1897 · Fine
€190
Neltje Blanchan
1898 · Fair
€30
Johann Jakob Bachofen
1907 · Good
€55
Vincent L. Milner
1867 · Fair
€30
Sir Robert Stawell Ball
1920 · Fair
€15
Franz Kafka
1921 · Good
€60
Joris-Karl Huysmans
1902 · Fine
€85
Arthur Wesley Dow
1935 · Good
€25
Guillaume Groen van Prinsterer
1868 · Very good · NL
€70
Frances Theodora Parsons
1898 · Fair
€75
Hermann T. Vulté, George M S Joint Author Neustadt
1920 · Fair
€15
Alpheus S. Packard
1906 · Fine
€100
Julien Wolbers
1871 · Good · NL
€115
Charles Riborg Mann, George Ransom Twiss
1935 · Very good
€30
Lewis Foreman Day
1910 · Very good
€25
Hans Licht
1931 · Very good
€70
Gebrüder Grimm [Brothers Grimm]
1879 · Good
€50
Abraham Kuyper
1911 · Fine · NL
€30
Friedrich Anton Wilhelm Miquel
1869 · Good · NL
€95
Walter Pater, Ernst Bendz
1873 · Fair
€40