F. S. Macaulay
1922 · Fine
€135
Peter Kropotkin
1931 · Very good
€60
Lewis Mumford
1935 · Very good
€25
George Santayana, Colin D. Standish
1935 · Good
€55
Felix Klein
1926 · Very good
€35
Hegeler Institute
1924 · Fine
€100
Balfour Stewart
1919 · Good
€20
Clive Bell
1924 · Very good
€115
Gardner Dexter Hiscox
1921 · Good
€25
T. L. Pennell, Field Marshal Earl Roberts
1920 · Fine
€65
Norman Robert Campbell
1907 · Good
€30
Wilmore, Albert.
1921 · Good
€35
Richard Jefferies
1907 · Fine
€90
Thomas Whittaker
1907 · Good
€95
Jørgen Peter Müller
1902 · Fine
€155
Florian Cajori
1929 · Good
€65
Joseph Edmund Wright
1913 · Very good
€30
E. T. Whittaker, Sir William McCrae
1906 · Good
€35
Henry Sinclair Hall, Samuel R. Knight
1904 · Fine
€30
Clive Bell
1935 · Very good
€120
Ron Larson
1906 · Good
€45
Sir J. J. Thomson
1907 · Good
€25
Herbert E. Cobb
1935 · Very good
€30
Mellor, Joseph William
1925 · Good
€35
P. Wijdenes
1932 · Very good · NL
€60
Albert Verwey
1916 · Very good · NL
€55
Joseph William Mellor
1935 · Good
€55
Garrett Putman Serviss
1913 · Good
€35
Ernst Heinrich Philipp August Haeckel
1911 · Very good
€110
Vreeswijk, Johannes Adrianus, jr.
1909 · Good · NL
€25
Felix Klein
1909 · Good
€80
F. Max Müller
1905 · Very good
€30
Harold Hilton
1914 · Good
€65
Arthur Gordon Webster
1935 · Good
€20
Ferenc Molnár, Josef Weinberger
1921 · Good
€90
Augustin Privat-Deschanel
1903 · Very good
€40
Winston S. Churchill
1906 · Good
€40
John A. Van de Walle
1920 · Good
€35
M.E. Schlesinger
1919 · Very good
€70
Hermann Cäsar Hannibal Schubert
1927 · Good
€65
Marcellus Emants
1900 · Very good · NL
€25
Marcellus Emants
1904 · Good · NL
€20
E. F. B. Fell
1909 · Good
€75
Paul Louis Mulder
1909 · Good · NL
€45
E. R. Hedrick
1920 · Very good
€60
Adolf Ónodi, St . Clair Thomson
1935 · Very good
€90
Ralph W. G. Wyckoff
1935 · Very good
€30
Joris-Karl Huysmans
1906 · Good
€25
J. H. Walsh
1922 · Very good
€115
Richard A. Proctor
1918 · Good
€50
George Moore
1913 · Very good
€70
Thomas Henry Huxley
1904 · Good
€35
Robert Tressell
1917 · Good
€30
Samuel Schmucker Sadtler
1935 · Very good
€45
Florian Cajori
1907 · Very good
€45
Emile Borel
1927 · Very good
€55
Frederik Carel Gerretson
1927 · Good · NL
€70
Erwin Madelung
1935 · Fine
€40
E. T. Whittaker, G. N. Watson
1920 · Fine
€75
John Cowper Powys
1933 · Very good
€50