WIA GC/1883/1 | Ollendorff, Ernst to Warburg, Aby 04/07/1883 | congratulates him on his 18th birthday [Ollendorff, Ernst must have made a mistake]; on the hard... |
WIA GC/1883/2 | Ollendorff, Oscar to Warburg, Aby 16/08/1883 | describes the setting of his holidays in the Harz mountains; reports on developments, hair... |
WIA GC/1883/3 | Ollendorff, Oscar to Warburg, Aby 12/09/1883 | he will need to stay another two weeks to recover; he is missing school and is looking forward to... |
WIA GC/1884/3 | Ollendorff, Ernst to Warburg, Aby 31/01/1884 | on his laziness in replying to Warburg; comments on the book 'la société de Berlin', proscribed... |
WIA GC/1886/4 | Ollendorff, Oscar and Ollendorff, Ernst to Warburg, Aby 25/08/1886 | congratulate him on his exam results; they wish him a happy student life |