WIA GC/1903/42 | Borstel, Friedrich von to Warburg, Aby 27/05/1903 | thanks him for a copy of his book |
WIA GC/1905/198 | Warburg, Aby to Götze, Carl 18/10/1905 | since he received H.H.A. Fricke's apologies in writing, he does not need to take steps officially... |
WIA GC/1905/39 | Borstel, Friedrich von to Warburg, Aby 15/05/1905 | thanks him for his lecture on Dürer; on a young lithographer Rudolf Fredderich who needs... |
WIA GC/1905/40 | Warburg, Aby to Borstel, Friedrich von 18/10/1905 | he still has not received a reply from H.H.A. Fricke; asks for Borstel's good services to talk to... |
WIA GC/1905/41 | Warburg, Aby to Borstel, Friedrich von 18/10/1905 | H.H.A. Fricke has replied to Warburg, summarizing their conversation in which Fricke apologised... |