WIA GC/1900/40 | Hilgers, Karl to Warburg, Aby 26/12/1900 | asks whether copies of some papers, requested by Warburg, are with Warburg?; evening invitation |
WIA GC/1900/62 | Programme of marriage of Victor Müller and Anna Katharina Hilgers 29/12/1900 | a programme/ aide-mémoire of the marriage ceremony of Dr. med. Victor Müller and Anna Katharina... |
WIA GC/1901/46 | Hilgers, Karl to Warburg, Aby 15/08/1901 | on the terrain where to site the Otto von Bismarck monument; plans about size; would love to get... |
WIA GC/1902/67 | Brockhaus, Heinrich to Warburg, Aby 10/06/1902 | forwards a number of slips of papers so that Warburg can see what has been checked; mentions... |