# Ludolff & Heussner
**Wikidata**: [Q139381488](https://www.wikidata.org/wiki/Q139381488)  
**Source**: https://4ort.xyz/entity/ludolff-heussner


## References

1. [Directories of Hannover](http://dfg-viewer.de/show?tx_dlf%5Bdouble%5D=0&tx_dlf%5Bid%5D=https%3A%2F%2Fdigitale-sammlungen.gwlb.de%2Fcontent%2F810649993_1878%2F810649993_1878.xml&tx_dlf%5Bpage%5D=248&cHash=a538a96b9feeb47259624a62934843bd)
2. [Directories of Hannover](http://dfg-viewer.de/show?tx_dlf%5Bdouble%5D=0&tx_dlf%5Bid%5D=https%3A%2F%2Fdigitale-sammlungen.gwlb.de%2Fcontent%2F810649993_1878%2F810649993_1878.xml&tx_dlf%5Bpage%5D=217&cHash=bb29d58ab3ad6f9447185e29c1e8ccd2)