You can ask online at the Vienna registration office for people who lived in Vienna beetween 1904 and 1975:http://www.wien.gv.at/english/history/archives/ancestors.htm...
then Meldearchiv in the Vienna city archives: Historische Meldeunterlagen 1904-1975 (German).
then you can go to an online-form:
Online-Formular: Auskunft aus historischen Meldeunterlagen - Antrag
it´s all in German:
Daten der/des Anfragenden (your name and adress)
Anfrageumfang (take here: über Meldedaten Dritter - die betreffende Person ist bereits verstorben ...)
Begründung (reason for searching) (searching for ancestors = "Familienforschung" in German)
Daten der gesuchten Person (name, Geburtsdatum: 02.05.1882, männlich = male; Geburtsort (place of birth), Beruf (profession)
bei mitgemeldeten Frauen und Kindern...: (names of wife and children, birth... as much as you know)
Angaben zur Auskunft:
gewünschter Beauskunftungszeitraum (which period do you search - it starts appr. 1904 and in your case until 1909),
Sonstige gewünschte Daten (wished informations): Abmeldevermerk (cancelling of registration when they leaved). Gattin (=wife), Kinder (=children), Religionsbekenntnsi (=religious profession), Staatsangehörigkeit (= citizenship). (take all of them)
You can expect an answer within 2 month.
Did you see this one an ancestry.com:
debrafellers86 (Beiträge anzeigen)
Veröffentlicht: 15 Apr 2002 00:14 GMT
Bearbeitet: 13 Jul 2004 22:56 GMT
Nachnamen: Richter, Dostal, Werz, Merz, Hurdes, Thornton, McMullin
If anyone has any information on these families,please contact me. Joseph Richter (m) Hedwig Dostal .Believed he was from Austria and she Was from Poland. They had Joseph and Bertha Richter and both were born in Vienna,Austria. Hedwig and her children came to USA ;New York area and her husband came after them. Their son Joseph married IreneWerz(Merz?) and they had Irene and Judith. His wife died early.Joseph remarried to a woman named Catherine Hurdes(sp). Judiths father died in the 1940's. Daughter Irene married a Thornton and Judith married Willard McMullin and she now lives in Bay City,Texas. I am trying to help her locate her family so any help is greatly appreaciated.