Brief an Prof [Rudolf] Lipschitz
London, 23.08.1870 [23rd August 1870]Brief an Prof [Rudolf] Lipschitz
Baltimore, Md., 28.10.1870 [28th October 1870]Brief an Prof [Rudolf] Lipschitz
Oxford, 22.04.1884 [22d April 1884]Brief an Prof [Rudolf] Lipschitz
Oxford, 14.08.1886 [14th August 1886]Brief an Prof [Rudolf] Lipschitz
Oxford, 21.01.1887 [21st Jan 1887]Brief an Prof [Rudolf] Lipschitz
London, 19.07.1889 [19th Jul 1889]Brief an Professor [Rudolf] Lipschitz
London, 13.01.1886 [13th Jan 1886]Brief an Sir [James Joseph Sylvester]
Bonn, 28.08.1878 [28th August 1878.]Brief an Sir [James Joseph Sylvester]
Bonn, 29.09.1878 [29th Septbr 1878.]Brief an Sir [Rudolf Lipschitz]
London, 01.11.1872 [1st Nov 1872]Brief an Sir [Rudolf Lipschitz]
London, 21.08.1870 [21st August 1870]Brief an Sir [Rudolf Lipschitz]
London, 07.09.1870 [7th Sept 1870]