WIA GC/19526 | Warburg, Aby to Warburg, Max 22/02/1927 | reports on Dr. Heile's visit in KBW, on Heile's work in the Weltwirtschaftsarchiv; on Warburg's... |
WIA GC/11181 | Warburg, Aby to Boll, Franz 30/12/1909 | introduces himself as grateful reader of Boll's 'Sphaera'; suggests that an icosahedron, which... |
WIA GC/11281 | Warburg, Aby to Boll, Franz 11/11/1910 | thanks him for a letter and offprints; he will try to finish the Ferrara research by Christmas... |
WIA GC/11331 | Warburg, Aby to Boll, Franz 13/03/1911 | informs him that he is sending him illustrations; wants to discuss the links he found when they... |
WIA GC/11344 | Warburg, Aby to Boll, [Franz] 20/04/1911 | orders photographs; suggests that costs of photographs to be borne by the Academy; thanks the... |