# Jan Otakar Jech
**Wikidata**: [Q105385857](https://www.wikidata.org/wiki/Q105385857)  
**Source**: https://4ort.xyz/entity/jan-otakar-jech


## References

1. [Collection of Registry Books at Prague City Archives](https://katalog.ahmp.cz/pragapublica/permalink?xid=E1F81ABF420B4558B0FE3F79EB3F1837&scan=146#scan146)
2. [Collection of Registry Books at Prague City Archives](http://katalog.ahmp.cz/pragapublica/permalink?xid=53D801A365C546A292C3F50127C59395&scan=6#scan6)
3. [List of residents in Prague 1830-1910 (1920)](https://katalog.ahmp.cz/pragapublica/permalink?xid=5F95BA94A45611E891C340618600A675&scan=1#scan1)