WIA GC/1901/41
Hansen, Sophus to Warburg, Aby 28/12/1901
Warburg purchased a painting by him and Hansen comments on Warburg's wish to have it varnished
WIA GC/1917/270
Meyer, Richard; Pauly, Carl August; Umlauf, [Karl]; Brinckmann, Maria; Hansen, Sophus; Pauli...
refer to the plan of 1914 for a purpose-built art exhibition building in Hamburg; although the...