WIA GC/1908/296 | Koetschau, Karl to Warburg, Aby 18/05/1908 | on the flow of letters; on the publications: 'Repertorium f. Kunstwissenschaft', art chronicle... |
WIA GC/1908/40 | Biermann, Georg to Warburg, Aby 08/01/1908 | introduces the new publication; wishes to interest Warburg in contributing articles |
WIA GC/1908/42 | Biermann, Georg to Warburg, Aby 11/01/1908 | thanks Warburg for his warm words; is looking forward to receiving Warburg's review of Ernst... |
WIA GC/1909/327 | Warburg, Aby to Koetschau, Karl; Kautzsch, Rudolf and Wulff, Otto 15/08/1909 | agrees with the others on [Hugo von] Tschudi re Annual Report and Bibliography; discusses who... |
WIA GC/1909/44 | Biermann, Georg to Warburg, Aby 13/07/1909 | asks Warburg whether the congress will discuss the project of publishing a bibliography as... |