Identifiers
| WikiData URI | http://www.wikidata.org/entity/Q20638632 |
| RKDartists | https://rkd.nl/explore/artists/19289 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.79063 |
| VIAF | http://viaf.org/viaf/57977272 |
| Adamlink URI | https://adamlink.nl/person/crowquill-alfred/5479 |
