# Doak VZ-4

> 1958 experimental VTOL aircraft model by Doak Aircraft Company

**Wikidata**: [Q1144651](https://www.wikidata.org/wiki/Q1144651)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Doak_VZ-4)  
**Source**: https://4ort.xyz/entity/doak-vz-4


## References

1. Freebase Data Dumps. 2013
2. U.S. Army Aircraft Since 1947