WIA GC/11630 | Warburg, Aby to Hertz, Hans 27/08/1912 | Hamburg-Amerika Linie has only recently employed a turbine engineer so that there is no vacancy... |
WIA GC/4341 | Warburg, Aby to Hertz, Hans 05/08/1912 | he will inform him of date and time of appointment [with Albert Ballin]; asks him to write him a... |
WIA GC/4383 | Hertz, Hans to Warburg, Aby 21/07/1912 | requests an appointment with Warburg to obtain an appointment with [Albert] Ballin |
WIA GC/4384 | Hertz, Hans to Warburg, Aby 01/08/1912 | thanks for an appointment |
WIA GC/4385 | Hertz, Hans Reinhold [?] to Warburg, Aby 24/08/1912 | thanks for Warburg's and his brother's efforts; he will meet him in Hamburg |