Charles Darwin
1909 · Fine
€90
Friedrich Engels
1930 · Good
€30
Frederick Orpen Bower
1934 · Good
€50
Thomas Aquinas Sister, originally Agnes O'Neil
1934 · Good
€75
Alfred Wegener
1906 · Very good
€55
Wouter Hendrik Van Seters
1935 · Good · NL
€50
Peter Kropotkin
1925 · Very good
€35
Verney Lovett Cameron, Daniel Oliver
1912 · Good
€25
Samuel L. Goldenberg
1919 · Very good
€95
R. C. Boer
1926 · Very good · NL
€50
Annie Salomons
1935 · Good · NL
€20
Willem Kloos
1902 · Very good · NL
€65
Uspenskiĭ Petr Demʹi͡anovich
1935 · Fine
€95
Annie Salomons
1923 · Very good · NL
€25
Eugen Horn
1900 · Good · NL
€50
A. G. Honig
1921 · Very good · NL
€45
Eduard Daniel van Oort
1922 · Fair · NL
€80
Ernest Thompson Seton
1905 · Good
€35
Stijn Streuvels
1912 · Fair · NL
€15
Stijn Streuvels
1912 · Good · NL
€65
Algernon Graves
1920 · Good
€40
Samuel Gronemann
1935 · Good · NL
€110
Aron Salomon Coltof
1918 · Very good · NL
€55
George Andries Koeze
1935 · Good · NL
€55
Pieter Gerrit Bos
1909 · Very good · NL
€60
Michael Idvorsky Pupin
1923 · Fair
€15
Johan de Meester
1919 · Fair · NL
€35
Johannes Pieter Janse
1935 · Fair · NL
€70
Frans Verschoren
1913 · Good · NL
€20
Arnold Bennett
1914 · Good
€50
M. Buys
1935 · Good · NL
€25
Jac Hijma
1910 · Very good · NL
€85
Marcellus Emants
1900 · Very good · NL
€25
Marcellus Emants
1904 · Good · NL
€20
Salomon Reinach
1935 · Fair
€15
Nederlandse Mycologische Vereniging
1918 · Fair · NL
€15
Willem Johannes Leyds
1926 · Good · NL
€75
Jan Valckenier Suringar
1935 · Very good · NL
€95
Jean Marie Antoine Gevers Leuven
1904 · Good · NL
€20
Hélène Swarth
1921 · Good · NL
€30
George J. Engelmann
1927 · Fair
€35
Frederik Carel Gerretson
1927 · Good · NL
€70
Thomas McIlwraith
1903 · Very good
€45
Arthur van Schendel
1935 · Good · NL
€45
N. M. Kam
1909 · Fair · NL
€60
Nicolass Muller
1915 · Fine · NL
€35
Klikspaan
1935 · Fair · NL
€35
Joseph Conrad
1924 · Very good
€85
Harry Sturgeon Crossen
1924 · Very good
€25
Jan Frederik van Someren
1900 · Very good · NL
€60
M. Buys
1901 · Good · NL
€45
Jan Casper Schreuder
1930 · Good · NL
€45
H. Clay Trumbull
1916 · Very good
€60
Eduard Zeller
1912 · Very good
€55
Justus van Maurik
1914 · Very good · NL
€45
Louis Couperus
1904 · Good · NL
€30
Luigi Cornaro
1916 · Very good
€55
British Ornithologists' Union
1907 · Fair
€45
Adolf Engler
1917 · Good
€25
Clive Bell
1935 · Very good
€120