Dyck compiled copies of Kepler 's unedited manuscripts , using international diplomatic contacts to convince the Soviet authorities to lend him the manuscripts kept in Leningrad for photographic reproduction .
A new edition was planned beginning in 1914 by Walther von Dyck ( 1856 -- 1934 ) .
Walther von Dyck compiled copies of Kepler 's unedited manuscripts , using international diplomatic contacts to convince the Soviet authorities to lend him the manuscripts kept in Leningrad for photographic reproduction .
A new edition was planned beginning in 1914 by Walther von Dyck ( 1856 -- 1934 ) .