Carlton C. Curtis
1907 · Fine
€50
Worthington Hooker
1906 · Very good
€30
Catherine Parr Traill, Agnes Chamberlin
1923 · Good
€25
William Beebe
1922 · Very good
€60
Christiaan Lodewijk Houthuysen
1930 · Good · NL
€30
Gilbert White, Anne Secord
1926 · Good
€20
Charles Darwin
1909 · Fine
€90
Julie Hoek
1930 · Very good · NL
€35
Grant Allen
1935 · Good
€75
Martin Klopstock
1911 · Good
€35
Adolf Engler
1917 · Good
€25
Sedgwick, Adam
1915 · Very good
€95
Joseph Le Conte
1928 · Very good
€30
Johannes Hoops
1911 · Good
€65
T. Jeffery Parker
1907 · Fair
€55
Charles Fort
1933 · Fair
€35
Percival Lowell
1907 · Very good
€25
Yogananda Paramahansa
1931 · Fine
€125
British Museum (Natural History). Dept . of Zoology, Eugene William Oates
1907 · Very good
€80
Hilaire Belloc
1929 · Fine
€35
Robert Flint
1932 · Very good
€40
Carl Lumholtz
1935 · Fair
€35
Ernest Thompson Seton
1912 · Fair
€25
Charles Almanzo Babcock
1935 · Fine
€75
Catherine Parr Traill
1900 · Very good
€50
Harriman Alaska Expedition (1899)
1901 · Very good
€70
Iwan Bloch, Richard Deniston
1901 · Very good
€25
J. Reynolds Green
1916 · Fair
€20
Claude Irwin Palmer
1912 · Good
€20
Eugène Pittard
1926 · Good
€20
Catherine Parr Traill, Elizabeth Thompson
1908 · Fair
€20
Maurice Henry Hewlett
1930 · Fair
€70
Carl Gustav Jung
1915 · Very good
€25
Thomas Troward
1922 · Good
€30
G. N. Watson
1935 · Good
€20
Nathaniel Southgate Shaler
1915 · Fair
€30
John Joly
1932 · Very good
€75
Elsdon Best
1935 · Good
€20
Maria Montessori
1931 · Good
€110
Friedrich Fröbel
1913 · Good
€20
Garrett Putman Serviss
1935 · Good
€95
Maurice Henry Hewlett
1926 · Fine
€45
Upton Sinclair
1927 · Very good
€75
Three Initiates
1928 · Good
€20
William Kingdon Clifford
1914 · Fair
€35
Frank Michler Chapman
1935 · Fine
€55
Hesketh Vernon Hesketh-Prichard, John Guille Millais
1902 · Good
€60
A. S. Neill
1935 · Very good
€45
George Santayana
1935 · Very good
€75
Miller, William J.
1935 · Fair
€20
Rudolf Otto
1929 · Fine
€35
Ernest Shurtleff Holmes
1935 · Fair
€15
Karel Wessel van Gorkom
1935 · Fair · NL
€20
Friedrich Schiller
1935 · Fair
€20
Bādarāyaṇa.
1908 · Good
€70
Lafcadio Hearn
1900 · Fair
€25
Ernst Christian Achelis
1902 · Good · NL
€20
Judah M. Eisenberg, Walter Greiner
1904 · Good
€40
John Henry Newman
1914 · Good
€20
Hans R. Pruppacher, J.D. Klett
1904 · Very good
€120