WIA GC/1903/194 | Mandach, Conrad de to Warburg, Aby 07/04/1903 | Warburg has been elected the Society's secretary for Germany and is asked whether he will accept... |
WIA GC/1903/195 | Mandach, Conrad de to Warburg, Aby 27/04/1903 | regrets that Warburg does not want to accept the post of secretary for Germany; since the society... |
WIA GC/1912/191 | Warburg, Aby to Clemen, Paul 23/08/1912 | the suggestions by [Arthur] Haseloff re differentiation of the committee sound very practical... |
WIA GC/1912/378 | Warburg, Aby to Haseloff, Arthur 23/08/1912 | the invitation to Paris was issued by Conrad de Mandach at the congresses in Darmstadt and in... |
WIA GC/1912/518 | Warburg, Aby to Kautzsch, Rudolf 11/08/1912 | wishes him a good holiday; on the congress: did the money, promised by the Treasury, arrive?; did... |