Postal Service through the years

Published On: Feb 06 2013 08:05:34 AM PST   Updated On: May 01 2013 09:35:15 AM PDT

Patrick Donahoe, postmaster general of the struggling United States Postal Service, "has decided to retire" in February after serving 39 years at the agency, the USPS announced Friday. Check out landmark moments in U.S. Postal Service history.

Postal Dates - Dead Letter Office
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1825: The dead letter office is established to hold "undeliverable" mail like the stacks of tires seen in this photo from 1925.

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