E. L. Jackson
1935 · Very good
€45
Hermann Wätjen
1927 · Very good · NL
€50
Carolyn Sherwin Bailey
1918 · Fair
€30
W. G. Collingwood
1910 · Good
€80
G. Hartwig
1900 · Good
€25
Annie Salomons
1935 · Good · NL
€20
Alfred Wegener
1906 · Very good
€55
Dirk Hudig
1908 · Very good · NL
€25
J. Frederick Kelly
1935 · Fair
€30
Charles Fletcher Lummis
1902 · Very good
€25
Agnes C. Laut
1920 · Good
€80
Willem Kloos
1902 · Very good · NL
€65
Annie Salomons
1923 · Very good · NL
€25
Victor Ernest Shelford
1935 · Fair
€20
R. P. J. Tutein Nolthenius
1917 · Very good · NL
€120
Hubert Howe Bancroft
1905 · Good
€25
Kenyon Cox
1935 · Very good
€40
Henry Hodgman Saylor
1920 · Good
€50
Egerton R. Young
1913 · Fair
€20
Hezekiah Butterworth
1906 · Good
€20
Lewis Mumford
1935 · Very good
€25
Henry David Thoreau
1935 · Good
€30
Howell, Thomas
1909 · Very good
€30
Nathaniel Southgate Shaler
1915 · Fair
€30
F. W. van Wijk
1935 · Good · NL
€30
William Beebe
1935 · Fine
€115
Kenyon Cox
1907 · Good
€80
J. P. Kleiweg de Zwaan
1911 · Fair · NL
€30
Ananda Coomaraswamy
1935 · Very good
€35
Pieter Johan Frederik Louw
1900 · Very good · NL
€55
D. Aitton
1920 · Good · NL
€30
Gerlof van Vloten
1901 · Fair · NL
€15
Verney Lovett Cameron, Daniel Oliver
1912 · Good
€25
Rudyard Kipling
1914 · Fair
€15
Willem Johannes Leyds
1926 · Good · NL
€75
J. Haak
1928 · Very good · NL
€30
Zane Grey
1923 · Very good
€30
Richard Harding Davis
1908 · Very good
€35
Laurence Binyon
1909 · Fair
€20
Pieter Cornelis Boutens
1916 · Very good · NL
€35
George Burton Adams
1935 · Good
€45
S. Coolsma
1902 · Good · NL
€80
Nederlandse Mycologische Vereniging
1918 · Fair · NL
€15
Kenyon Cox
1906 · Good
€50
Hartmann, Sadakichi
1929 · Good
€20
Ernest Thompson Seton
1905 · Good
€35
Gontran de Poncins, Lewis Galantière
1933 · Fair
€40
C. Poensen
1902 · Fair · NL
€75
Robert W. Service
1909 · Very good
€40
Frank Adam
1935 · Good
€55
M. Buys
1935 · Good · NL
€25
Roy Chapman Andrews, Yvette Borup Andrews
1921 · Good
€105
Annie Salomons
1916 · Good · NL
€30
George Alexander Wilken
1914 · Very good · NL
€40
Joseph Pennell
1915 · Very good
€50
W. H. Hudson
1935 · Good
€105
John Joly
1932 · Very good
€75
Édouard Jacques Guillaume Everts
1911 · Very good · NL
€85
Robert Frost
1935 · Good
€25
G. A. Henty
1909 · Very good
€25