# Otto Koffka
**Wikidata**: [Q124445397](https://www.wikidata.org/wiki/Q124445397)  
**Source**: https://4ort.xyz/entity/otto-koffka


## References

1. [civil death certificate](https://www.ancestry.de/imageviewer/collections/2958/images/48459_prep570%5E001251-00538?treeid=&personid=&rc=&queryId=bb5d1632-ad4d-4849-8cf6-577244cd9b12&usePUB=true&_phsrc=iIb380&_phstart=successSource&pId=6065623)
2. Virtual International Authority File