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Data from
- Allgemeines Künstlerlexikon Online / Artists of the World Online (visit site)
- Bibliothéque Nationale de France (visit site)
- Consortium of European Research Libraries (visit site)
- Encyclopedia of Nineteenth-Century Photography (visit site)
- Oxford Dictionary of National Biography (visit site)
- PhotographyDatabase.org (visit site)
- RKDartists (visit site)
- Union List of Artist Names (Getty ULAN) (visit site)
- Virtual International Authority File (visit site)
- Wikipedia (visit site)
- Wikidata (visit site)