- [S238] Julie Drexler, "Ignaz ZWIEBACK & Malvine WEINFELD of Osijek , Croatia," e-mail message from @yorku.ca (Toronto, Canada) to Ed Zwieback, 8/18/04. Hereinafter cited as "ZWIEBACK of Osijek Croatia."
- [S244] Gertrude Zwieback, "Samuel ZWIEBACK Family Info," e-mail message from @kabsi.at (Modling, Austria) to Ed Zwieback, 2002. Hereinafter cited as "Samuel ZWIEBACK Family Info."
- [S245] Hanns-Walter Lange, "Family History; ZWIEBACK & MISKOLCZY", May 2000 (Purley, Surrey, England). . Hereinafter cited as "Family History; ZWIEBACK & MISKOLCZY."
- [S260] Burials at Hungarian Jewish Cemeteries ; Oroklet, online http://www.oroklet.hu. Hereinafter cited as Burials at Hungarian Jewish Cemeteries.
- [S269] ZWIEBACK/DEUTSCH marriage, 1908, in Wien Marriage Record, unknown manuscript info, Henry Wellisch, Toronto, Ontario, Canada. Hereinafter cited as Wien Marriage Record.
- [S272] Wolf-Erich Eckstein, "Marriage; ZWIEBACKSTEINMAN," e-mail message from @csi.com (Wien, Austria) to Ed Zwieback, 4 Aug 2000. Hereinafter cited as "Marriage; ZWIEBACKSTEINMAN."
- [S273] Julie Drexler, "Family History; Ignaz ZWIEBACK," e-mail message from @yorku.ca (Toronto, Canada) to Ed Zwieback, 5 Feb, 7 Mar, & 29 Nov 2002. Hereinafter cited as "Family History; Ignaz ZWIEBACK."
- [S279] Spielman & Eckstein, "Birth & Death; Regine ZWIEBACK," e-mail message from @web.de & @ikg-wien.at (Berlin & Wien) to Ed Zwieback, 20-29 Oct. 2007. Hereinafter cited as "Birth & Death; Regine ZWIEBACK."
- [S282] IKG, Burials;Vienna Central Cemetery (ZFH); Jewish (http://friedhof.ikg-wien.at/result.asp?lang=en: IKG-Vienna). Hereinafter cited as Burials;Vienna Central Cemetery (ZFH); Jewish.
- [S296] H. Hadwig, "Family Birth Record; Mary Josefine ZWIEBACK," e-mail message from @inode.at (Vienna, Austria) to Ed Zwieback, 10 Jan 2008. Hereinafter cited as "Family Birth Record; Mary Josefine ZWIEBACK."
- [S298] The "Ludwig ZWIEBACK & Bruder" Business in Vienna, online http://ezwieback.com/Zwieback/Zwieback_Vienna.htm. Hereinafter cited as The "Ludwig ZWIEBACK & Bruder" Business.
- [S308] Rachel Salamander, The Jewish World of Yesterday (New York, NY, USA: Rizzoli, 1991). Hereinafter cited as Jewish World of Yesterday.
- [S318] Samuel ZWIEBACK entry, Birth Record Extract 201 (16 Dec 1880), Personal; Gertrude Zwieback, Modling, Wien, Austria.
- [S319] Obituary; Ludwig ZWIEBACK, Neue Freie Presse, Wien, Austria, 23 Jan 1906, 28. Hereinafter cited as Neue Freie Presse.
- [S320] Death Announcement; Josefine Zwieback, Neue Freie Presse, Wien, 7 Feb 1897, 14. Hereinafter cited as Neue Freie Presse.
- [S321] Death Announcement; Ludwig DEUTSCH, Neue Freie Presse, Wien, 27 May 1931, 17. Hereinafter cited as Neue Freie Presse.
- [S322] Zwieback Fashion Store, Neue Freie Presse, unknown location, 16 Oct 1932. Hereinafter cited as Neue Freie Presse.
- [S323] Death Announcement; Leonora GROSS Zwieback, Neue Freie Presse, Wien, Austria, 21 Oct 1923, 51. Hereinafter cited as Neue Freie Presse.
- [S324] Death Announcement; Samuel ZWIEBACK, Neue Freie Presse, Wien, Austria, 25 Jan 1929, 18. Hereinafter cited as Neue Freie Presse.
- [S325] Death Announcement; Josef ZWIEBACK, Neue Freie Presse, Wien, Austria, 4 Nov 1927, 21. Hereinafter cited as Neue Freie Presse.
- [S337] Death notice; Bernard DEUTSCH, Neue Freie Presse, Wien, Austria, 20 nov 1928, 26. Hereinafter cited as Neue Frieie Presse.
- [S349] Ignatz ZWIEBACK, Neue Freie Presse, Wien, Austria, 31 Dec 1914, 22. Hereinafter cited as Neue Freie Presse.
- [S354] Samuel ZWIEBACK & Josefine BOHM marriage, 27 Apr 1873, Personal; Gertrude Zwieback, Modling, Wien, Austria. Unknown manuscript info.
- [S364] ZWIEBACK-GREIF marriage, 1900, in IKG Marriage Record, unknown manuscript info, IKG, Wien,, Wien, Austria. Hereinafter cited as IKG Marriage Record.
- [S396] Family History and MISKOLCZY-ZWIEBACK, Personal, ca 2000, Personal; Petra Dorman, Manchester, Greater Manchester, North West, England.
- [S404] Joseph ZWIEBACK Photos, IKG, Wien,, Wien, Austria; Georg Gaugusch, Oct. 2008.
- [S603] Death Announcement; Moritz MISKOLCZY, Neue Freie Presse, Wien, austria, 21 Feb 1893, 15. Hereinafter cited as Neue Freie Presse.
- [S609] Branko Ostajmer, "Various; ZWIEBACK-WEINFELD," e-mail message from @gmail.com (Zagreb, Croatia) to Ed Zwieback, 1 Aug 2010. Hereinafter cited as "Various; ZWIEBACK-WEINFELD."
- [S615] City Court Record; Ignatz ZWIEBACK, Narodne novine, Osijek, Croatia, 8 Mar 1883, 8. Hereinafter cited as Narodne novine.
- [S622] Death notice; Minna Miskolczy, Neue Freie Presse, Wien, austria, 29 Jul 1906, 28. Hereinafter cited as Neue Freie Presse.
- [S632] Branko Ostajmer, "Family History; Ignatz ZWIEBACK," e-mail message from @gmail.com (Zagreb, Croatia) to Ed Zwieback, 15 Sep 2010. Hereinafter cited as "Family History; Ignatz ZWIEBACK."
- [S675] ZWIEBACK Family of Osijek Cemetery Marker Photo, Personal; Branko Ostajmer, Zagreb, Grad Zagreb, Croatia; Branko Ostajmer, 8 Dec 2010.
- [S696] Lehmanns Lehmanns City Directory; Wien 1859-1942, various (Wien, Austria: Lehmanns, 1859-1942). Hereinafter cited as Lehmanns City Directory; Wien.
- [S702] Branko Ostajmer, "Family History; Ignatz ZWIEBACK/Netti NAGEL," e-mail message from @gmail.com (Zagreb, Croatia) to Ed Zwieback, 14 Feb 2011. Hereinafter cited as "Family History; Ignatz ZWIEBACK/Netti NAGEL."
- [S705] Melita vob, Jews in Croatia - Jewish communities (Zagreb, Croatia: Izvori, 2004- 2nd Edition). Hereinafter cited as Jews in Croatia.
- [S708] ZWIEBACK/ZIRNERs of Vienna, Notes, 5 Apr 2011, Giles Macdonogh, London, Greater London, England.
- [S734] ZWIEBACK Business History, online http://de.wikipedia.org/wiki/…. Hereinafter cited as ZWIEBACK Business History.
- [S735] Advert.; Ignatz Zwieback Store, Die Drau, Osijek, Croatia, 11 Dec 1912, 7. Hereinafter cited as Die Drau.
- [S745] Genteam ;Genealogy databases of Austria, online Genteam ;Genealogy databases of Austria. Hereinafter cited as Genteam ;Genealogy databases of Austria.
- [S757] JewishGen.Org, online http://www.jewishgen.org/databases/jgdetail_2.php, Jewish Community in Budapest (Budapest, Hungary), downloaded 2010.
- [S778] School Record;: Dragutin Zwieback, by Branko Ostajmer; unknown series; State Archives in Osijek, Osijek, Osijek-Baranja, Croatia. Online unknown url; unknown file name; Printout dated 5 Dec 2013.
- [S787] Business advert. and Ignatz ZWIEBACK newspaper; "Die Drau" Osijek, Osijek, Osijek-Baranja, Croatia.
- [S820] ZWIEBACK-WEINFELD Marriage Contract, Edgar Zwieback, Long Beach, Los Angeles, California, USA. Hereinafter cited as ZWIEBACK-WEINFELD Marriage Contract.
- [S834] Arcanum Digitális Tudománytár (ADT), online http://arcanum.hu/en/. Hereinafter cited as Arcanum Digitális Tudománytár (ADT).
- [S897] B. Ostajmer, "Re: Oskar Z's parents, Ignjat and Matilda," e-mail message from @gmail.com (Zagreb, CRO) to Julie Drexler, 11 Aug 2018. Hereinafter cited as "Family History; Oskar ZWIEBACK."
- [S901] Osijek..., Family members; Malvina WEINFELD Zwieback (n.p.: n.pub., 1937). Hereinafter cited as Family members; Malvina WEINFELD Zwieback.
- [S929] ZWIEBACK-FELDREICH marriage, 1877, in Marriage Regis., unknown manuscript info, Hungarian National Archives, Budapest,, Budapest, Hungary. Hereinafter cited as Marriage Regis.:.
- [S934] Jews in Wien, Aufbau, New York, USA, 28 Jun 1946, 38. Hereinafter cited as Aufbau.
- [S962] Marriage Listing; ZWIEBACK-FELDREICH, Hungarian National Archives, Budapest,, Budapest, Hungary. Hereinafter cited as Marriage Listing; ZWIEBACK-FELDREICH.
- [S967] Marr. Regis; ZWIEBACK-GROSS, Hungarian National Archives, Budapest,, Budapest, Hungary. Hereinafter cited as Marr. Regis; ZWIEBACK-GROSS.