WIA GC/10275 | Warburg, Aby to Obst, Arthur (Hamburger Fremdenblatt) 08/10/1905 | [Karl] Dissel asked him to forward a copy of his Dürer lecture to the 'Hamburger Fremdenblatt... |
WIA GC/11554 | Warburg, Aby to Obst, Arthur 02/03/1912 | thanks him for a copy of the newspaper with Warburg's photograph; where did they get the... |
WIA GC/11803 | Warburg, Aby to Obst, Arthur 27/10/1912 | [illegible] |
WIA GC/17434 | Fritsch, R to Warburg Aby 01/11/1926 | thanks him for the card with greetings of fellow colleagues at the grammar school; he missed the... |
WIA GC/19339 | Warburg, Aby to Simon, Sally 11/01/1927 | returns Emil Simon's letter to him; he will forward books from KBW to Emil Simon; [Arthur] Obst... |