WIA GC/1911/52 | Warburg, Aby to Behrend, Friedrich 05/09/1911 | Professor Conrad Borchling kindly gave Warburg [Friedrich] Behrend's note re manuscript in the... |
WIA GC/1911/53 | Warburg, Aby to Behrend, Friedrich 18/09/1911 | supplies text with which manuscripts 11, folio 50 r starts; encloses photographs; thanks him for... |
WIA GC/1911/795 | Vollmer, Hans Arthur to Warburg, Aby 12/10/1911 | Dr. [Friedrich] Behrend informed him from Edinburgh that the Mappa Mundi was not in the... |
WIA GC/1912/54 | Behrend, Friedrich to Warburg, Aby 25/01/1912 | replies to a research request; he checked the publications of the Royal Observatory in Edinburgh... |
WIA GC/1917/26 | Warburg, Aby to Behrend, Friedrich 26/04/1917 | requests bibliographical information on the prophecies of Johann Lichtenberger and on... |