The U.S. Postal Service is commemorating Colorado's 1876 admission to the United States with a new Forever stamp.

Colorado celebrates its 150th anniversary of statehood in 2026. It became the 38th state in the Union on Aug. 1, 1876.

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 ...

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

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

The stamp honors Lunar New Year traditions celebrated by various Asian communities in the U.S.