Arthur Schopenhauer
1868 · Good
€40
Thorstein Veblen
1921 · Good
€40
Adolf Engler
1917 · Good
€25
John Dewey
1901 · Good
€45
Rabindranath Tagore
1917 · Very good
€35
Ika A. Thomése
1935 · Fine · NL
€35
John Cowper Powys
1933 · Very good
€50
John Caird
1884 · Fair
€25
John Caird
1905 · Very good
€30
Charles John Holmes
1935 · Very good
€35
William Dwight Whitney
1898 · Fair
€35
Roger Eliot Fry
1931 · Very good
€30
H. G. Wells
1911 · Very good
€40
G. Hartwig
1900 · Good
€25
Frederick Soddy
1935 · Fine
€30
Morris Raphael Cohen
1935 · Fine
€35
Sir Robert Stawell Ball
1920 · Fair
€15
John Ruskin
1900 · Very good
€25
Stefan Zweig
1935 · Good
€35
William Blair-Bell
1915 · Good
€30
Frederick Moore Simpson
1908 · Very good
€35
Charles Riborg Mann
1916 · Very good
€35
Arthur van Schendel
1921 · Fine · NL
€35
Carlton C. Curtis
1907 · Fine
€50
Wilbur Pardon Bowen
1935 · Good
€50
Wanda M. Miller, Wanda Maureen Miller
1912 · Good
€35
Klaas Johan Pen
1935 · Fine · NL
€35
Wilmore, Albert.
1921 · Good
€35
W. Vrolik
1852 · Fair · NL
€40
Walter W. Bryant
1907 · Good
€25
Mabel Osgood Wright
1903 · Good
€40
Herbert E. Cobb
1935 · Very good
€30
Percival Lowell
1907 · Very good
€25
Paul Goodman
1920 · Good
€20
R. V. Pierce
1914 · Very good
€35
Marcellus Emants
1900 · Very good · NL
€25
Marcellus Emants
1904 · Good · NL
€20
Stijn Streuvels
1912 · Fair · NL
€15
William Chauvenet
1899 · Very good
€45
Annie Salomons
1935 · Good · NL
€20
Adam Storey Farrar
1879 · Good
€45
Eugen Horn
1900 · Good · NL
€50
Florian Cajori
1907 · Very good
€45
Thomas Henry Huxley
1889 · Fair
€30
John Couch Adams, J. W. L. Glaisher
1903 · Good
€30
W. W. Rouse Ball
1909 · Good
€30
Arthur A. Stevens
1925 · Good
€25
Hendrik Blink
1925 · Fair · NL
€20
Friedrich Fröbel
1919 · Good
€20
Sextus Empiricus.
1887 · Good
€40
William Henry Bragg
1925 · Fair
€20
Theun de Vries
1935 · Good · NL
€20
Harriet Mann Miller
1895 · Good
€50
Carl Gustav Jung
1915 · Very good
€25
Klikspaan
1935 · Fair · NL
€35
T. E. Lawrence
1907 · Very good
€45
Alfred North Whitehead, Bertrand Russell
1911 · Very good
€25
Thompson, D'Arcy Wentworth
1931 · Fine
€35
John Eric Erichsen
1908 · Good
€25
C. A. Johns
1870 · Good
€40