P. de Haan
1932 · Very good · NL
€50
Cassius Jackson Keyser
1935 · Good
€50
Marion Harland
1875 · Good
€80
Mary Whiton Calkins
1910 · Very good
€35
Santiago Ramón y Cajal, Pedro Pasik
1902 · Good
€35
Carl Wernicke
1887 · Good
€85
R. M. Caven
1923 · Good
€35
Walter Crane
1911 · Very good · NL
€25
Henry Sidgwick
1893 · Good
€95
Stephen Walter Ranson
1933 · Very good
€40
Willem Jan Maria Westerwoudt
1915 · Fine · NL
€40
Clemens Brentano
1894 · Very good
€45
Seneca Egbert
1908 · Good
€30
Augustus Hopkins Strong
1926 · Good
€30
Daniel Webster
1854 · Good
€150
Samuel Schoch
1935 · Very good · NL
€55
Jacobus Heinsius
1887 · Fine · NL
€80
S. Coolsma
1902 · Good · NL
€80
L. Th Mayer
1910 · Good · NL
€25
Michael Faraday
1874 · Fine
€65
Arthur A. Noyes
1935 · Good
€20
Lotta Jean Bogert
1935 · Fair
€20
Marcellus Emants
1900 · Very good · NL
€25
Frederick Orpen Bower, Sydney Howard Vines
1903 · Fair
€45
Aron Salomon Coltof
1918 · Very good · NL
€55
José Ortega y Gasset
1931 · Very good
€60
William Chase Stevens
1909 · Good
€20
Abraham Kuyper
1911 · Fine · NL
€30
Hendrik Kern
1872 · Fine · NL
€205
Nikos Kazantzakis
1901 · Good
€25
A. Wilmer Duff
1916 · Very good
€65
Arie Mijnlieff
1881 · Good · NL
€120
H. Newell Martin
1903 · Fine
€40
H. Koffyberg
1924 · Fair · NL
€20
Hubert Gijsbert Carel Marcus
1889 · Fine · NL
€65
A. Rutgers
1872 · Fair · NL
€50
Nederlandsche Entomologische Vereeniging
1889 · Very good · NL
€90
Garrett Putman Serviss
1907 · Fair
€30
Garrett Putman Serviss
1913 · Good
€35
George MacDonald
1894 · Fair
€85
P. Wijdenes
1932 · Very good · NL
€60
Amédée Guillemin
1892 · Good
€85
Vincent L. Milner
1867 · Fair
€30
Brooks Adams
1897 · Fine
€190
D. W. Cathell
1906 · Good
€20
Carl Adolf Elias
1893 · Good · NL
€170
Maurice S. Baldwin
1882 · Fine
€140
Marinus Jan de Wilde
1909 · Fair · NL
€35
Clive Bell
1935 · Very good
€120
Aulnis de Bourouill, Johan baron d'
1880 · Fair · NL
€35
Peter Kropotkin
1910 · Fine
€50
Ernst Cassirer
1930 · Good
€30
H. G. Wells
1911 · Very good
€40
Julien Wolbers
1871 · Good · NL
€115
Benjamin Elie Colaço Belmonte
1867 · Very good · NL
€65
H. Newell Martin
1908 · Very good
€35
Florian Cajori
1929 · Good
€65
Willem Bilderdijk
1864 · Good · NL
€85
Jan Arnold Bennet
1852 · Very good · NL
€225
Worthington Hooker
1883 · Very good
€130