# I. P. Berthrong

> American cartographer

**Wikidata**: [Q123989576](https://www.wikidata.org/wiki/Q123989576)  
**Source**: https://4ort.xyz/entity/i-p-berthrong


## References

1. [Geographicus Rare Antique Maps biographical dictionary of cartographers](https://www.geographicus.com/P/RareMaps/berthrongithamar)
2. [Geographicus Rare Antique Maps](https://www.geographicus.com/P/ctgy&Category_Code=berthrongithamar)