Frederick Orpen Bower
1935 · Good
€35
Asa Gray
1872 · Fair
€25
J. Haak
1928 · Very good · NL
€30
H. B. Spotton
1882 · Good
€50
C. A. Johns
1870 · Good
€40
Joel Chandler Harris
1889 · Good
€35
George Adolphus Jacob
1908 · Very good
€35
Frederick Orpen Bower
1919 · Good
€30
Carlton C. Curtis
1907 · Fine
€50
Howell, Thomas
1909 · Very good
€30
William Chase Stevens
1909 · Good
€20
E. L. Jackson
1935 · Very good
€45
Frederick Orpen Bower, Sydney Howard Vines
1903 · Fair
€45
Adolf Engler
1917 · Good
€25
H. Was
1898 · Very good · NL
€50
Verney Lovett Cameron, Daniel Oliver
1912 · Good
€25
Marcellus Emants
1900 · Very good · NL
€25
Marcellus Emants
1904 · Good · NL
€20
Inge, William Ralph
1926 · Fine
€50
James M. Macoun
1919 · Very good
€45
James M. Macoun
1898 · Fair
€30
Lewis Mumford
1935 · Very good
€25
Alphonso Wood
1877 · Good
€50
Dirk Hudig
1908 · Very good · NL
€25
Garrett Putman Serviss
1913 · Good
€35
Joseph Pennell
1915 · Very good
€50
George Burton Adams
1935 · Good
€45
Craandijk, J.
1902 · Fair · NL
€15
Sargent, Charles Sprague
1905 · Good
€20
Charles Darwin
1894 · Good
€45
Charles Darwin
1895 · Fair
€25
J. Reynolds Green
1916 · Fair
€20
Rabindranath Tagore
1917 · Very good
€35
Heindel, Max, Max Heindel
1918 · Very good
€30
Frederick A. Ober
1883 · Fair
€30
Denham Jordan
1908 · Fair
€50
Annie Salomons
1935 · Good · NL
€20
Eduard Strasburger
1935 · Fine
€45
Carl Gobée
1861 · Very good · NL
€45
William A. Alcott
1887 · Fair
€40
Henry Nicholson Ellacombe
1887 · Very good
€45
Peter Kropotkin
1906 · Good
€45
John Palliser
1862 · Good
€35
Ralph Rodney Root
1935 · Fair
€25
Charles Fort
1933 · Fair
€35
Campbell, Douglas Houghton
1911 · Fair
€25
W. H. Hudson
1935 · Fair
€25
Richard Jefferies
1918 · Fair
€15
Marcellus Emants
1889 · Fair · NL
€40
Charles Darwin
1919 · Good
€30
Julie Hoek
1930 · Very good · NL
€35
Charles William Eliot, Πλάτων
1911 · Good
€20
Alexander von Humboldt
1853 · Very good
€50
Hendrik Blink
1925 · Fair · NL
€20
Guillaume Groen van Prinsterer
1903 · Fine · NL
€30
Frederick Orpen Bower
1934 · Good
€50
W. Hamilton Gibson
1910 · Good
€20
Klikspaan
1935 · Fair · NL
€35
Jean Louis Rodolphe Agassiz
1888 · Good
€45
Mabel Osgood Wright
1903 · Good
€40