[B173] Overlijden Rosanna Werthman, in: New York State, Department of Health (Albany, New York, USA), Death Index 1886, pagina 584, Certificate nr. 15599 (Rosana Werthmin); FamilySearch (Salt Lake City, Utah, USA), "New York, State Death Index, 1880-1956", online database (met online afbeeldingen van Reclaim The Records, Mill Valley, California, USA),
https://www.familysearch.org/ark:/61903/1:1:QGR2-7FLT (geraadpleegd 26-12-2021).