WIA GC/1889/34 | Vöge, Wilhelm to Warburg, Aby 04/01/1889 | thanks him for New Year greetings; tells him when Friedrich Keutgen, [Theobald] Ziegler, Hubert... |
WIA GC/1891/24 | Warburg, Aby to Ziegler, Theobald, 08/12/1891 | application to be awarded a PhD for his research on Sandro Botticelli; oral examinations to be... |
WIA GC/1892/59 | Ziegler, Theobald to Warburg, Aby 31/12/1892 | thanks him for a copy of his thesis |
WIA GC/1902/321 | Wolfhagen, G. to Warburg, Aby 24/02/1902 | list of people who were sent copies of Warburg's article 'Bildniskunst', 18 in Germany, 15 in... |
WIA GC/1926/50 | Warburg, Aby to Beer, Georg [after 18/10/1926] | thanks him for his letter of 18/101/1926 with the information that Warburg has been elected... |