Katkov, Michail N.
born 13. February 1818 in Moskau; died 1. August 1887 in SnamenskojeBrief von Karl Ernst von Baer an Alexander Keyserling, 19.04.1865 [19 April o.J. (1865)]
Sankt Petersburg, 19/04/1865Meyer, Clemens Friedrich
born 15. May 1824 in Bad Arolsen; died 17. May 1899 in HeidelbergBrief von Clemens Friedrich Meyer an Karl Ernst von Baer, o.D. [o.D. (1865?)]
Sankt Petersburg, o.D. [o.D. (1865?)]