Edward Thomas
1935 · Fine
€165
Johann Gottfried Frantz
1874 · Very good · NL
€150
Charles Dudley Warner
1888 · Very good
€70
Henry D. Inglis
1853 · Very good
€50
Leonard Anthony Springer
1915 · Fine · NL
€30
Vries, Hugo de
1803 · Very good · NL
€235
Herman Gorter
1935 · Very good · NL
€40
Willem Kloos
1902 · Very good · NL
€65
John Joly
1932 · Very good
€75
Neltje Blanchan
1906 · Very good
€70
Jan Frederik van Someren
1900 · Very good · NL
€60
Claas Bruin
1724 · Very good · NL
€270
Robert Pollok
1832 · Very good
€165
Phillips Brooks
1895 · Very good
€75
Grant Allen
1884 · Very good
€45
Asa Gray
1871 · Very good
€120
Johann Hermann Knoop
1824 · Very good · NL
€295
Jan van der Groen
1679 · Fine · NL
€1,250
Jacob Haafner
1851 · Very good · NL
€85
Alexander von Humboldt
1876 · Very good
€150
Freda Dinn
1903 · Very good
€35
Robert Jacobus Fruin
1928 · Fine · NL
€55
Charles Hutton
1812 · Very good
€245
Robert Ellis, F.L.S.
1852 · Very good
€110
Jan Jacob Bruins
1935 · Very good · NL
€45
Maatschappij der Nederlandse Letterkunde te Leiden
1811 · Fine · NL
€180
Arthur van Schendel
1935 · Very good · NL
€70
Annie Salomons
1923 · Very good · NL
€25
Arthur van Schendel
1921 · Fine · NL
€35
Heindel, Max, Max Heindel
1918 · Very good
€30
Frederick Moore Simpson
1908 · Very good
€35
Frederick Soddy
1935 · Fine
€30
Jean-Henri Fabre
1924 · Very good
€65
Claas Hendriksz Gietermaker
1761 · Fine · NL
€315
Henry van Dyke
1909 · Very good
€25
Ira Remsen
1888 · Very good
€120
Lazzaro Spallanzani
1778 · Very good
€545
Robert Burns
1838 · Very good
€105
Jules Verne
1888 · Very good
€50
Abraham Kuyper
1911 · Fine · NL
€30
Camille Flammarion
1887 · Fine
€80
Jan Valckenier Suringar
1935 · Very good · NL
€95
Marcellus Emants
1889 · Very good · NL
€165
W. Brennand
1903 · Very good
€70
Justus von Liebig
1844 · Very good
€220
Eduard Strasburger
1935 · Fine
€45
Howell, Thomas
1909 · Very good
€30
Jules Michelet
1869 · Very good
€140
C. Snouck Hurgronje
1890 · Fine · NL
€155
Wernher der Gartenaere
1917 · Fine
€65
Balfour Stewart
1875 · Very good
€120
Hans R. Pruppacher, J.D. Klett
1904 · Very good
€120
Cornelius Belkmeer
1753 · Very good · NL
€935
F. Pijper
1915 · Very good · NL
€40
John Burroughs
1886 · Very good
€200
Koninklijke Akademie van Wetenschappen (Netherlands). Afdeeling Natuurkunde
1886 · Very good · NL
€85
Charles Kingsley
1865 · Very good
€140
E. J. Potgieter
1886 · Very good · NL
€45
Dudley Allen Sargent
1917 · Very good
€30
Benjamin Franklin
1752 · Very good
€720