1. Burgerlijke stand geboortes Groningen, Jaar 1895; Aktenr. 1631 [Genlias]
2. The Northern Data Base: Dutch Jewish Genealogy Database,
Internet Centre for Research on Dutch Jewry (Eli Schaap (editor / coordinator), Centre for
Research on Dutch Jewry), http://shum.huji.ac.il/~dutchjew/genealog/ndbeli/f_8a.html#0 [The Dutch Jewish Genealogical Data Base]
1. Digitaal Joods Monument (Stichting Digitaal monument
Joodse Gemeenschap in Nederland)
2. The Northern Data Base: Dutch Jewish Genealogy Database,
Internet Centre for Research on Dutch Jewry (Eli Schaap (editor / coordinator), Centre for
Research on Dutch Jewry), http://shum.huji.ac.il/~dutchjew/genealog/ndbeli/f_8a.html#0 [The Dutch Jewish Genealogical Data Base]
1. Burgerlijke stand geboortes Groningen, Jaar 1895; Aktenr. 1631 [Genlias]
2. Digitaal Joods Monument (Stichting Digitaal monument Joodse Gemeenschap in Nederland)
3. The Northern Data Base: Dutch Jewish Genealogy Database, Internet Centre for Research on Dutch Jewry (Eli Schaap (editor / coordinator), Centre for Research on Dutch Jewry), http://shum.huji.ac.il/~dutchjew/genealog/ndbeli/f_8a.html#0 [The Dutch Jewish Genealogical Data Base]