WIA GC/1902/18 | Baerwald, Richard and Baerwald, Olli to Warburg, Aby 31/12/1902 | New Year Greetings |
WIA GC/1905/5 | Baerwald, Richard to Warburg, Aby 02/09/1905 | Baerwald sent Warburg a questionnaire not so much about aesthetic problems of the farcical, but... |
WIA GC/1905/6 | Baerwald, Richard to Warburg, Aby 01/10/1905 | thanks Warburg for the replies to his questionnaire; thanks Warburg for his good services in... |
WIA GC/1905/7 | Warburg, Aby to Baerwald, Richard 21/10/1905 | Warburg reports on Dritter Kunsterziehungstag, the congress of art education, which was a disaster |
WIA GC/1905/8 | Baerwald, Richard to Warburg, Aby 22/10/1905 | discusses further points of his questionnaire, notably [Theodor] Lipps' theory of comparison and... |