# airmail etiquette

> label used to indicate that a letter is to be sent by airmail

**Wikidata**: [Q2464421](https://www.wikidata.org/wiki/Q2464421)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Airmail_etiquette)  
**Source**: https://4ort.xyz/entity/airmail-etiquette


## References

1. Freebase Data Dumps. 2013