> For the complete documentation index, see [llms.txt](https://docs.census.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.census.de/the-census-database-overview/authority-data.md).

# Authority Data

Census records have been partially linked to identifers from the following indices:

[VIAF](https://viaf.org/) – Virtual International Authority File

[GND](https://www.dnb.de/DE/Professionell/Standardisierung/GND/gnd_node.html) – Gemeinsame Normdatei, Deutsche Nationalbibliothek

[iDAI gazetteer](https://gazetteer.dainst.org/app/#!/home) – Place names defined by the Deutsches Archäologisches Institut

[Pleiades](https://pleiades.stoa.org/) – Place names defined by the Pleiades gazetteer

[TGN](https://www.getty.edu/research/tools/vocabularies/tgn/index.html) – Getty Thesaurus of Geographic Names

[ULAN](https://www.getty.edu/research/tools/vocabularies/ulan/index.html) – Getty Union List of Artist Names

[Geonomes](https://www.geonames.org/) — Geographical database

[Wikidata](https://www.wikidata.org/wiki/Wikidata:Main_Page) – Open knowledge base

These identifiers have been linked to records in the Object Types Antique Monuments, Postclassical Works, and Locations.