WIA GC/11929 | Warburg, Aby to Herkenroth, Wilhelm 08/08/1913 | Professor Ernst Troeltsch had to cancel his lectures; Professor Paul Hensel kindly accepted to... |
WIA GC/12026 | Warburg, Aby to Herkenroth, Wilhelm [1914] | text for a note on his library |
WIA GC/28562 | Duncker, Arthur to Warburg, Aby 03/12/1913 | invites him to submit the course contents for the academic Summer Courses in 1914; needs to have... |
WIA GC/29445 | Herkenroth, Wilhelm to Warburg, Aby 30/06/1919 | introduces the 'Hamburgische Auslandskalender', edited by him, published by Walter Bangert... |
WIA GC/32598 | Warburg, Aby to Warburg, Mary 23/07/1914 | at long last it rained the previous evening; it had been unberably humid; reports on the meeting... |