WIA GC/10634 | Warburg, Aby to Strzygowski, Josef 09/06/1907 | informs him that he sent out the programme for the congress to: Sidney Colvin, C. Dodgson in... |
WIA GC/10645 | Warburg, Aby to Strzygowski, Josef 15/06/1907 | informs him that he had replies by Georg Gronau, R. Koechlin, Jan Kalf, J. Destrée; asks whether... |
WIA GC/10646 | Warburg, Aby to Strzygowski, Josef 22/06/1907 | Warburg lists receipt of replies; Joseph Destrée, Brussels; Jan Kalf, The Hague; Andreas Aubert... |
WIA GC/2181 | Koechlin, Raymond to Warburg, Aby 14/10/1906 | arranges an appointment |
WIA GC/2182 | Koechlin, Raymond to Warburg, Aby [19/10/1906] | changes time of the appointment |