. . "Gau Wien of the National Socialist Party (NSDAP, Vienna): Official documentation regarding the research of family trees, personal certificates and permits of Jews and Gypsies, lists of Mischlinge, and other matters"@eng . "Gau Wien of the National Socialist Party (NSDAP, Vienna): Official documentation regarding the research of family trees, personal certificates and permits of Jews and Gypsies, lists of Mischlinge, and other matters"@eng . .