WIA GC/1909/19 | Beindorff, Fritz to Warburg, Aby 20/12/1909 | refers to Warburg's letter of 11/12/1909, re Hugo Vogel; following Beindorff's conversation with... |
WIA GC/1910/44 | Warburg, Aby to Beindorff, Fritz [1910] | the Berlin firm of architects, Baurat Eggert, experienced difficulties with the city authorities... |
WIA GC/1910/45 | Beindorff, Fritz to Warburg, Aby [1910] | informs him confidentially that the painter [Erich] Erler will be commissioned to paint reception... |