Identifiers
| WikiData URI | http://www.wikidata.org/entity/Q28144 |
| Biografisch Portaal | http://www.biografischportaal.nl/persoon/35791540 |
| Ecartico | http://www.vondel.humanities.uva.nl/ecartico/persons/4199 |
| RKDartists | https://rkd.nl/explore/artists/43285 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.29351 |
| VIAF | http://viaf.org/viaf/52484309 |
| Adamlink URI | https://adamlink.nl/person/kalf-willem/3178 |
