George Burton Adams
1935 · Good
€45
Bertrand Russell
1916 · Fair
€45
Martin Robison Delany
1865 · Good
€40
Charles Fort
1933 · Fair
€35
Alexander von Humboldt
1853 · Very good
€50
Houston Stewart Chamberlain
1902 · Good
€45
George J. Engelmann
1927 · Fair
€35
Jan Jacob Bruins
1935 · Very good · NL
€45
Victor Lefebure
1935 · Fair
€15
Samuel Pierpont Langley
1889 · Good
€45
Seymour Dunbar
1919 · Fair
€20
Abraham Kuyper
1907 · Very good · NL
€30
Abraham Kuyper
1935 · Very good · NL
€50
Eugène Pittard
1926 · Good
€20
Richard A. Proctor
1918 · Good
€50
James Joyce, James Joyce
1933 · Very good
€35
J. P. Kleiweg de Zwaan
1911 · Fair · NL
€30
Thomas Henry Huxley
1904 · Good
€35
Oswald Spengler, Charles Francis Atkinson
1918 · Good
€45
Victor Ernest Shelford
1935 · Fair
€20
Thomas Henry Huxley
1889 · Fair
€30
Marcellus Emants
1900 · Very good · NL
€25
Marcellus Emants
1904 · Good · NL
€20
Grant Allen
1910 · Good
€40
Alb C. Kruijt
1927 · Very good · NL
€25
P. de Haan
1932 · Very good · NL
€50
Pierre Eliza Clausing
1914 · Fair · NL
€20
Eileen Edna Power
1933 · Good
€40
Garrett Putman Serviss
1913 · Good
€35
Thomas Griffith Taylor
1922 · Very good
€50
Peter Kropotkin
1906 · Good
€45
Garrett Putman Serviss
1909 · Good
€45
Nicolass Muller
1915 · Fine · NL
€35
Nederlandse Mycologische Vereniging
1918 · Fair · NL
€15
Simon Newcomb
1910 · Good
€20
Frédéric Bastiat
1873 · Fair
€30
John of the Cross
1914 · Fair
€20
Walter B. Cannon
1931 · Good
€20
D. Embden
1902 · Very good · NL
€30
George Alexander Wilken
1914 · Very good · NL
€40
Jean Louis Rodolphe Agassiz
1884 · Fair
€50
Lafcadio Hearn
1935 · Good
€20
Emanuel Hannak
1911 · Very good · NL
€25
Friedrich Nietzsche
1925 · Good
€50
Holger Mosbech
1935 · Fair · NL
€20
Gerlof van Vloten
1901 · Fair · NL
€15
Nina Coltart
1926 · Fair
€20
Simon Newcomb
1903 · Good
€45
John Ruskin
1887 · Good
€45
Nathaniel Southgate Shaler
1915 · Fair
€30
George Bernard Shaw
1935 · Very good
€25
John William Norie
1886 · Good
€50
William Samuel Sadler
1915 · Very good
€25
Annie Salomons
1935 · Good · NL
€20
H. G. Wells
1929 · Very good
€25
H. Koffyberg
1924 · Fair · NL
€20
Eskelhoff Carsjen Gravemeijer
1902 · Good · NL
€30
Thomas Mann
1928 · Very good
€45
Walter W. Bryant
1907 · Good
€25
E. J. Banfield
1922 · Very good
€30