Identifiers
| WikiData URI | http://www.wikidata.org/entity/Q18516569 |
| Biografisch Portaal | http://www.biografischportaal.nl/persoon/37677906 |
| RKDartists | https://rkd.nl/explore/artists/3395 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.26027 |
| Rijksmuseum Amsterdam | urn:rijksmuseum:people:RM0001.PEOPLE.55811 |
| VIAF | http://viaf.org/viaf/28119351 |
| Adamlink URI | https://adamlink.nl/person/backer-hilmar-johannes/5017 |
