WIA GC/10318 | Warburg, Aby to Albrecht, Carl 21/01/1906 | supplies names of [A.] Dürer experts, [Oskar] Eisenmann in Kassel and [Max J.] Friedländer in Berlin |
WIA GC/11410 | Warburg, Aby to Albrecht, Carl; Bartning, Adolf, Rode [F.C.?] 25/06/1911 | statement regarding the oil painting of a seated figure in the Parey estate; Warburg examined it... |
WIA GC/12832 | Ruben, Paul to Warburg, Aby 11/05/1927 | he and [Carl?] Albrecht suggest a 60th birthday party for Richard [Robinow?]; should they meet at... |
WIA GC/17206 | Warburg, Aby to Albrecht, Carl 10/03/1926 | he has just spoken to the photographer Rudolf Dührkoop; lists prices for photographs, paper... |
WIA GC/174 | Warburg, Aby to Albrecht, Carl 24/03/1918 | Albrecht's query is justified; Warburg will respond to it by forwarding two copies of a brochure... |