WIA GC/10984 | Warburg, Aby to Hiersemann, Karl W. 10/02/1909 | book orders for books by Golubew, [J.] Strzygowski, [Peter?] Bruckmann, 'American Journal' |
WIA GC/3896 | Bruckmann, Peter to Warburg, Aby 12/02/1910 | welcomes him as new member of the arts and craft society; membership fee is self-selected |
WIA GC/3897 | Meyer, Richard to Warburg, Aby 15/02/1910 | welcomes him as new member of the arts and craft society |
WIA GC/3898 | Bruckmann, Peter to Warburg, Aby 23/04/1910 | circular with news of projects etc.; programme of the third congress; list of names and amount of... |