The USPS is honoring Phillis Wheatley, an important literary figure in Colonial America.

Boxer Muhammad Ali once joked that becoming a postage stamp would be "the only way I'll ever get licked.” Now, his very own stamp is days away from release. A commemorative U.S. Postal Service stamp ...

Yellowstone’s "secret" century-old Old Faithful stamp is available only by request and may be the last of its kind. Before ...

People use document stamps to mark documents quickly with information relevant to their creation, distribution or storage. Information stamped on, or embedded in, a document can relay the time and ...

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