WIA FC/1891/14/2 | Warburg, Moritz to Warburg, Aby 02/02/1891 | thanks him for a letter; agrees that Warburg should have been sent a cable with the news of Rosa... |
WIA FC/1922/22/1 | Warburg, Max Adolph to Warburg, Aby and Warburg, Mary 15/01/1922 | wants to know when Mary arrived in Kreuzlingen; hopes that everything is fine; he has been... |
WIA FC/1922/23/14 | Warburg, Max Adolph to Warburg, Mary 16/06/1922 | enthusiastic report about his trips, first Sauerland, Lahntal, then Danube, Bodensee, Ulm... |
WIA FC/1922/8/143 | Warburg, Mary to Warburg, Aby 17/03/1922 | she has replied to all his questions, he does not need to repeat them but be patient, cannot... |
WIA GC 1930/1236 | Saxl, Fritz to Hamann, Richard 15/07/1930 | |