New: U.S. Postal Abbreviations
How do I write to Palau, again?
Postal Unit Glossary
Learn the difference between a station and branch, CPO and CPU!
What's My Postmark Worth? [.pdf]
A response to a frequently asked question.
A U.S. Four-Bar Postmark Reference
What's a Highway Post Office?
What's a Star Route?
To Cut or Not to Cut? (To 2x4.)
Find out more! PMCC Museum. The PMCC has mounted this collection on acid-free paper and preserved it in mylar page protectors. The Collection occupies more than 300 binders.
Thanks to the PMCC's efforts you can view the collection for yourself, digitally! The entire catalogue has been scanned, and the full set of graphic files is available for puchase on CD. More information, and an order form, are available here.