Identifiers
| WikiData URI | http://www.wikidata.org/entity/Q89623 |
| RKDartists | https://rkd.nl/explore/artists/84793 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.84227 |
| VIAF | http://viaf.org/viaf/5724183 |
| Adamlink URI | https://adamlink.nl/person/willroider-ludwig/3546 |
