The Railway Mail Service of the United States Post Office Department was a significant mail transportation service in the US from the mid-19th century...

specifically for staff to sort mail en route, in order to speed delivery. The RPO was staffed by highly trained Railway Mail Service postal clerks, and was off-limits...

The Railway Mail Service (RMS) Library is a major collection of materials pertaining to en route distribution history. Incorporated in May 2003, it can...

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...

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

The mail or post is a system for physically transporting postcards, letters, and parcels. A postal service can be private or public, though many governments...

the Railway Mail Service was an important issue in the United States. It was a popular technique and the backbone of the United States Postal Service through...

code—and U.S. Military Mail locations, which have USPS codes ("AA", "AE", "AP") but no ANSI code. The United States Postal Service (USPS) has established...

York, post office about 1888. The Albany mail professionals recommended the dog to their Railway Mail Service colleagues, and he became a nationwide mascot...

model designed as a mail truck for the United States Postal Service, which has been its primary user since it first entered service in 1986, 38 years ago...