WIA FC/1902/9/65 | Warburg, Aby to Warburg, Mary 14/09/1902 | travelling has one good side: one has time to occupy oneself with oneself; the congress in... |
WIA GC/1902/441 | Voll, Karl to Warburg, Aby 15/12/1902 | thanks him for his essay, inquires about a hotel in Ravenna and Venice |
WIA GC/1903/287 | Voll, Karl to Warburg, Aby 11/04/1903 | invites him for a drink |
WIA GC/1903/288 | Voll, Karl to Warburg, Aby 24/04/1903 | on the Botticelli painting 'The Birth of Venus'; he raises the question whether Botticelli... |
WIA GC/1904/320 | Voll, Karl to Warburg, Aby 16/02/1904 | recommendation for Dr. Friedrich Rintelen and his studies on Giotto [di Bondone] |