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United States Railway Mail Service postmark collection
MS 685  
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Includes sixteen envelopes and fifty-six postcards with Railway Mail Service (RMS) or Postal Transportation Service (PTS) cancels.
The Railway Mail Service (RMS), a Department of the United States Post Office, and its successor the Postal Transportation Service (PTS), carried most of the mail in the United States between 1890 and 1970. Established in 1869, the Railway Mail Service provided for the movement of mail by train. Highly trained RMS postal clerks staffed the Railway Post Office (RPO), a separate car on a passenger train. Mail sorted en route, received a cancellation just as if it had been mailed at a local post office. On October 1, 1948, the Railway Mail Service was renamed the Postal Transportation Service. The last railway post office car operated between New York and Washington, D.C. on June 30, 1977.
1 half-box
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