WIA GC/1901/102 | Veth, Jan Pieter to Warburg, Aby 07/07/1901 | informs him of his arrival in Hamburg and asks Warburg to book him into a hotel |
WIA GC/1901/103 | Veth, Jan Pieter to Warburg, Aby 03/11/1901 | arrangements to meet, informs him about the photographs he has ordered in Amsterdam |
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/1902/435 | Veth, Jan Pieter to Warburg, Aby 29/05/1902 | thanks him very much for the book, ['Bildniskunst']; discusses its merits |
WIA GC/1902/436 | Veth, Jan Pieter to Warburg, Aby 25/07/1902 | supplies measurements of painting [of the double portrait of Warburg's parents] in the museum in... |