# Robert Holder

> photographer

**Wikidata**: [Q94860420](https://www.wikidata.org/wiki/Q94860420)  
**Source**: https://4ort.xyz/entity/robert-holder


## References

1. Catalog of the German National Library
2. Integrated Authority File
3. ADAGP/CISAC membership list at 07/01/2019
4. ADAGP directory