WIA GC/1904/136 | Friedländer, Max J. to Warburg, Aby 04/01/1904 | he has not heard of or seen a catalogue of the [Gustav?] Mayer collection and advises Warburg to... |
WIA GC/1904/221 | Mayer, Gustav to Warburg, Aby 14/11/1904 | two friends have started looking for books requested by Warburg; they hope to come up with the... |
WIA GC/1905/374 | Mayer, Gustav to Warburg, Aby 087/05/1905 | greetings to Warburg's parents; mentions Mrs. Gilsoul, Miss Alix Guillain, Mr. Petruczi; enjoys... |
WIA GC/1905/375 | Mayer, Gustav to Warburg, Aby 04/07/1905 | Gilsoul and Petruczi are looking forward to meeting [Aby Warburg and Mary Warburg] on their trip... |
WIA GC/1905/376 | Mayer, Gustav to Warburg, Aby 19/10/1905 | a letter marked 'confidential', with an enclosure, extant, describes the sequence of events... |