WIA FC/1921/3/3 | Derenberg, Julius to Warburg, Aby 20/03/1921 | congratulates him on the final exams of Marietta and Frede; his own son Carl and his nephew... |
WIA GC/1901/95 | Simonsfeld, Henry to Warburg, Aby 28/02/1901 | thanks him for his query of 24/04/1901; refers to cod. ital. 162: the year of death of Leonardo... |
WIA GC/1904/185 | Jolles, Mathilde to Warburg, Mary 14/08/1904 | on [Heinrich] Embden; on a gap in the correspondence; on their summer holidays which she enjoys... |
WIA GC/1909/173 | Warburg, Aby to Habich, Georg 29/10/1909 | orders a plaster cast of an icosahedron [a solid contained by twenty plane faces], as published... |
WIA GC/1909/50 | Warburg, Aby to Boll, Franz 30/12/1909 | introduces himself as grateful reader of Boll's 'Sphaera'; suggests that an icosahedron, which... |