WIA GC/1889/18 | Koetschau, Karl to Warburg, Aby 12/08/1889 | elaborate apologies why he did not write for some time; he enjoyed his holidays at home in... |
WIA GC/1889/19 | Koetschau, [Karl] to Warburg, Aby 03/12/1889 | to judge by Warburg's letter he thinks that history of art is better provided for in Strasbourg... |
WIA GC/1890/17 | Koetschau, [Karl] to Warburg, Aby 12/02/1890 | asks Warburg to send him the list of courses in Strasbourg university and information on student... |
WIA GC/1890/18 | Koetschau, Karl to Warburg, Aby 16/03/1890 | thanks him for the list of courses in Strasbourg but he cannot go there for the moment; he will... |
WIA GC/1890/19 | Koetschau, [Karl] to Warburg, Aby 26/06/1890 | he spent some time in Zwickau in Saxony because of his military service; he wanted to go to... |