Alexander von Humboldt
1858 · Good
€110
Simon Newcomb
1903 · Good
€45
Richard Maurice Bucke
1935 · Very good
€85
Mary Somerville
1863 · Good
€170
Elijah H. Burritt
1866 · Good
€60
Camille Flammarion
1887 · Fine
€80
Denison Olmsted
1857 · Fair
€40
Denison Olmsted
1881 · Good
€100
Thomas Henry Huxley
1904 · Good
€35
Richard A. Proctor
1918 · Good
€50
Elijah H. Burritt
1862 · Good
€125
Simon Newcomb
1917 · Good
€20
Robert Ellis, F.L.S.
1852 · Very good
€110
Charles John Holmes
1935 · Very good
€35
Simon Newcomb
1910 · Good
€20
John Harris
1876 · Very good
€85
W. Brennand
1903 · Very good
€70
Mary Somerville
1853 · Good
€95
Alfred A. Robb
1935 · Very good
€55
Thomas Ruggles Pynchon
1878 · Very good
€240
William Chauvenet
1899 · Very good
€45
John Fiske
1894 · Very good
€60
William Cecil Dampier
1930 · Very good
€60
Thomas Morgan Rotch
1914 · Good
€50
Ernst Heinrich Philipp August Haeckel
1900 · Fine
€30
F. H. Bradley
1905 · Good
€30
Elias Loomis
1902 · Fine
€55
Arthur Schopenhauer
1868 · Good
€40
Amédée Guillemin
1886 · Very good
€205
Dionysius Lardner
1852 · Good
€110
Wood, Robert Williams
1919 · Fine
€40
Robert Hooke
1896 · Fair
€35
John William Norie
1886 · Good
€50
M.E. Schlesinger
1919 · Very good
€70
Elias Loomis
1854 · Good
€105
Julius Adolph Stöckhardt
1876 · Good
€55
Thomas P. Jones
1868 · Good
€70
Robert Chambers
1852 · Good
€160
Harold Hilton
1914 · Good
€65
J. H. de Groot
1924 · Good · NL
€40
McDougall, William
1917 · Fine
€100
Carl David Tolmé Runge
1916 · Fine
€50
James Bissett Pratt
1935 · Very good
€70
Christopher Morley
1935 · Good
€30
John Henry Comstock, Vernon L. Kellogg
1935 · Good
€105
Marion Lowell
1897 · Good
€55
Theodor Reik
1929 · Very good
€40
Steven S. Zumdahl
1915 · Good
€45
James M. Dunlop
1864 · Good
€110
William Henry Bragg
1925 · Fair
€20
Robert Chambers
1867 · Good
€120
George L. Hosmer
1927 · Good
€65
Koninklijk Nederlands Meteorologisch Instituut.
1926 · Good · NL
€30
Ernst Cassirer, Claus Rosenkranz
1935 · Good
€25
John A. Suchocki
1924 · Good
€25
George Fownes
1873 · Fine
€60
Moritz Schlick
1928 · Good
€55
Balfour Stewart
1875 · Very good
€120
Evelyn Underhill
1935 · Very good
€90
William C. McC Lewis
1935 · Good
€30