Frederika Wolff had a boarding house at the Molenstraat in Meppel. See for additional information (in Dutch) the website Joods Monument Meppel (Jewish Monument Meppel).
A Liro card exists for this person or family. The original cards are kept at the Nationaal Archief (National Archive) at The Hague.
This person is commemorated on a memorial in Meppel. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.