WIA GC/10475 | Warburg, Aby to Lichtwark, Alfred 04/12/1906 | requests information whether the Kunsthalle has the books by Sidney Colvin 'Drawings by Old... |
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/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/10666 | Warburg, Aby to Colvin, Sidney 26/07/1907 | the editor of the congress publication, [Karl] Koetschau, will be pleased to receive Colvin's... |
WIA GC/1251 | Colvin, Sidney to Warburg, Aby 22/11/1904 | informs him that the British Museum has the Otto print; on the Flemish niello cup; on the Picture... |