“The postal service is one of the oldest federal agencies,” says Daniel Piazza, a curator of philately at the Smithsonian's National Postal Museum. “Maybe for that reason, we tend to take it for ...
The U.S. Postal Service is celebrating its 250th anniversary this weekend, and you won't have to check your mailbox for the invite. The agency's semiquincentennial will be marked by an event at the ...
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