WIA GC/10691 | Warburg, Aby to Warburg, Abraham S. 25/08/1907 | requests assistance with persuading his brother-in-law Adolph Jacob Hertz to take his health... |
WIA GC/10852 | Warburg, Aby to Hertz, Adolph Jacob [24/03/1908?] | Warburg has to make a decision whether to rent or buy a bigger house; it all depends whether he... |
WIA GC/11606 | Warburg, Aby to Glück, Gustav 07/06/1912 | Warburg is pleased that [Gustav] Glück plans to attend [the congress]; Venturi's son has died in... |
WIA GC/11609 | Warburg, Aby to Rathgen, Karl 27/06/1912 | due to the death of his brother-in-law Adolph Jacob Hertz, Director of the East African Shipping... |
WIA GC/11799 | Warburg, Aby to Dwelshauvers, Jacques 29/09/1912 | concedes that Mesnil [Jacques Dwelshauvers] is right; Warburg would like to help him re... |