Florian Cajori
1907 · Very good
€45
W. W. Rouse Ball
1901 · Fair
€30
W. W. Rouse Ball
1909 · Good
€30
William R. Shepherd
1913 · Good
€70
N. M. Kam
1909 · Fair · NL
€60
Percival Lowell
1907 · Very good
€25
R. G. Collingwood
1929 · Good
€35
Joseph Pennell
1915 · Very good
€50
Herbert E. Cobb
1935 · Very good
€30
Lewis Mumford
1935 · Very good
€25
Erwin Madelung
1935 · Fine
€40
Charles Mair
1933 · Good
€60
Bumpus, T. Francis
1906 · Fair
€45
P. Abas
1902 · Good · NL
€70
Mahaffy, John Pentland Sir
1918 · Good
€50
Carl David Tolmé Runge
1916 · Fine
€50
Stewart Edward White
1916 · Fine
€100
John Joly
1932 · Very good
€75
Mary Innes
1920 · Good
€55
Wilmore, Albert.
1921 · Good
€35
Louis Bathe Rawling
1935 · Good
€55
Salisbury, Rollin D.
1909 · Fine
€65
Bumpus, T. Francis
1919 · Very good
€100
G. H. Hardy, T. W. Körner
1935 · Very good
€25
Thomas Mann
1928 · Very good
€45
Claude Irwin Palmer
1912 · Good
€20
Maiuri, Amedeo
1934 · Very good
€115
Theun de Vries
1935 · Good · NL
€20
Roy Chapman Andrews, Yvette Borup Andrews
1921 · Good
€105
Bertrand Russell
1916 · Good
€80
Hamilton Wright Mabie
1901 · Fair
€35
Alfred Wegener
1906 · Very good
€55
Mabel Osgood Wright
1903 · Good
€40
Arnold J. Toynbee, D.C Somervell
1901 · Very good
€125
Joseph Jacobs
1904 · Good
€25
Nathaniel Southgate Shaler
1915 · Fair
€30
Garrett Putman Serviss
1913 · Good
€35
Charles John Holmes
1935 · Very good
€35
Willem Jan Maria Westerwoudt
1915 · Fine · NL
€40
Alfred North Whitehead
1921 · Good
€20
Stewart Edward White
1918 · Very good
€65
Dirk Hudig
1908 · Very good · NL
€25
Annie Salomons
1935 · Good · NL
€20
Thomas Henry Huxley
1904 · Good
€35
Arthur Gordon Webster
1935 · Good
€20
Mackinder, Halford John Sir
1922 · Very good
€35
Carl Joseph West
1920 · Very good
€45
Maurice Henry Hewlett
1930 · Fair
€70
N. Hofmeyr
1913 · Very good · NL
€50
J.L. Beijers (Firm)
1928 · Very good · NL
€40
Charles Fletcher Lummis
1902 · Very good
€25
Werner Spalteholz
1905 · Good
€95
James Joseph Sylvester
1927 · Good
€30
Maurice Henry Hewlett
1926 · Fine
€45
Robert Louis Stevenson
1906 · Fair
€20
L. E. J. Brouwer
1909 · Good · NL
€60
Willem Kloos
1902 · Very good · NL
€65
Haldane Macfall
1935 · Very good
€50
Gerlof van Vloten
1901 · Fair · NL
€15
Herman Bakels
1927 · Good · NL
€110