Gau Wien of the National Socialist Party (NSDAP, Vienna): Material relating to "Racial Purity" including correspondence of the regional offices of the Ministry of Geneology, orders regarding children, and other matters 1. Correspondence between the NSDAP and the regional offices of the Ministry of Geneology regarding the exchange of apartments and families with many children (contract by M. Bormann regarding the same matter); indecision regarding the choice of suitable families for the concept of "Racial Purity"; 2. Orders regarding the Mischlinge children in the schools, children of religious believers (Pflegekind), establishment of the religion of children, and permission to marry; 3. Pages from the "Sesdisditliche Volkskionfzerforsching" newsletter by Dr. Karl Wuelfrath, Cologne (?).