United States airmail was a service class of the United States Post Office Department (USPOD) and its successor United States Postal Service (USPS) delivering...

Airmail (or air mail) is a mail transport service branded and sold on the basis of at least one leg of its journey being by air. Airmail items typically...

worker. Though not an official creed or motto of the United States Postal Service, the Postal Service does acknowledge it as an informal motto along with...

Reference: Wikimedia Commons has media related to Airmail stamps of the United States. Airmails of the United States 1930 Graf Zeppelin stamps The Official Blackbook...

The Board of Governors of the United States Postal Service is the governing body of the United States Postal Service (USPS). The board oversees the activities...

The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or Postal Service, is an independent agency of the executive branch...

The United States Postal Inspection Service (USPIS), or the Postal Inspectors, is the federal law enforcement arm of the United States Postal Service. It...

obsolete. As early as October 1831, the United States Postal Service recognized common abbreviations for states and territories. However, they accepted...

post offices. The United States officially requires international First Class and Priority Mail letters to be marked with "AIRMAIL/PAR AVION". This requirement...

Zone Improvement Plan) is a system of postal codes used by the United States Postal Service (USPS). The term ZIP was chosen to suggest that the mail travels...