WIA FC/1910/4/25 | Warburg, Aby to Warburg, Mary 11/04/1910 | 'Fortuna' [on S. Maria della Salute] is enveloped in rain; the next day he will go to Ferrara and... |
WIA FC/1910/4/30 | Warburg, Mary to Warburg, Aby 13/04/1910 | spring is coming, she is really very happy with the strong light; advises Warburg to enjoy... |
WIA FC/1910/4/39 | Warburg, Aby to Warburg, Mary 16/04/1910 | he travelled the previous day, had to get up very early; there were two Swabian engineers in his... |
WIA GC/1910/151 | Dyroff, Karl to Warburg, Aby 14/04/1910 | appointment |
WIA GC/1910/152 | Dyroff, Karl to Warburg, Aby 22/07/1910 | apologizes for late reply; has no information for Warburg; there is no new literature about the... |