A mail bag or mailbag can be one of several types of bags used for collecting or carrying different types of postal material.[1][2]
References
Further reading
- Cushing, Marshall (1893). The Story of Our Post Office: The Greatest Government Department in all its Phases. Boston, Massachusetts: A.M. Thayer & Co – via Internet Archive.
- Melius, Louis (1917). The American postal service: history of the postal service from the earliest times. The American system described with full details of operation. Washington, D.C.: National Capital Press. Retrieved August 15, 2012 – via Internet Archive.
Look up mailbag in Wiktionary, the free dictionary.
Wikimedia Commons has media related to mail bags.