# Robert M. Langdon

> American historian (1919-1967)

**Wikidata**: [Q138316261](https://www.wikidata.org/wiki/Q138316261)  
**Source**: https://4ort.xyz/entity/robert-m-langdon


## References

1. [Find a Grave](https://www.findagrave.com/memorial/110967561/robert-millard-langdon)