George Bourne
1935 · Very good
€45
British Ornithologists' Union
1907 · Fair
€45
Gebrüder Grimm [Brothers Grimm]
1879 · Good
€50
Victor Ernest Shelford
1935 · Fair
€20
Stone, Witmer
1905 · Fair
€20
Arthur Schopenhauer
1868 · Good
€40
Arabella B. Buckley
1909 · Good
€20
Alfred Kaestner
1904 · Very good
€35
Hubert Howe Bancroft
1905 · Good
€25
Arabella B. Buckley
1876 · Good
€35
Beatrix Potter
1912 · Good
€35
J. P. Kleiweg de Zwaan
1911 · Fair · NL
€30
Hilaire Belloc
1935 · Good
€45
Lankester, E. Ray Sir
1922 · Good
€30
Andrew Lang
1930 · Very good
€25
B. P. Ponsioen
1935 · Very good · NL
€30
Herman Gorter
1935 · Very good · NL
€40
Parmenides.
1902 · Fair
€35
Edward Jesse
1862 · Good
€40
Eadweard Muybridge, University of Pennsylvania
1891 · Good
€35
Robert Michael Ballantyne
1879 · Good
€35
Wouter Hendrik Van Seters
1935 · Good · NL
€50
Eugène Pittard
1926 · Good
€20
Antwerp Edgar Pratt
1910 · Good
€40
Pieter Johannes Veth
1899 · Good · NL
€45
Mabel Osgood Wright
1903 · Good
€40
Kenyon Cox
1906 · Good
€50
Edward Carpenter
1935 · Good
€40
Anatole France
1923 · Fair
€20
Charles G. D. Roberts
1923 · Very good
€25
Howell, Thomas
1909 · Very good
€30
Ernest Thompson Seton
1905 · Good
€35
Harriet Mann Miller
1891 · Fair
€35
Garrett Putman Serviss
1913 · Good
€35
J. Arthur Thomson
1909 · Fine
€45
John George Wood
1870 · Fair
€40
Louis Figuier
1884 · Good
€45
W. H. Hudson
1901 · Good
€25
W. H. Hudson
1935 · Good
€30
Alpheus S. Packard
1904 · Good
€25
A. Ackerman
1852 · Fair
€35
Roy Chapman Andrews
1926 · Good
€25
René Vallery-Radot
1903 · Very good
€35
Ary Prins
1924 · Fair · NL
€45
Ernest Thompson Seton
1929 · Fine
€35
Pieter Joseph Cruse
1911 · Fine · NL
€30
John Ruskin
1912 · Fair
€30
L. A. Borradaile
1935 · Good
€20
Grace Greenwood
1867 · Good
€50
Guillaume Groen van Prinsterer
1903 · Fine · NL
€30
William Yarrell
1882 · Good
€45
Alfred North Whitehead, Bertrand Russell
1911 · Very good
€25
Oscar Wilde
1904 · Very good
€30
Archibald Thorburn
1935 · Very good
€35
Edward Carpenter
1898 · Good
€45
W. H. Hudson
1935 · Fair
€25
Charles G. D. Roberts
1906 · Good
€30
George J. Engelmann
1927 · Fair
€35
Alexander von Humboldt
1853 · Very good
€50
Eugen Horn
1900 · Good · NL
€50