# John L. Sullivan

> American engineer (1777–1865)

**Wikidata**: [Q86459406](https://www.wikidata.org/wiki/Q86459406)  
**Source**: https://4ort.xyz/entity/john-l-sullivan-q86459406


## References

1. Geni.com
2. [Find a Grave](https://www.findagrave.com/memorial/233715655/john_langdon-sullivan)
3. Library of Congress Control Number