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Category:Commemorative stamps of the United States

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The Post Office Department was created in 1792 with the passage of the Postal Service Act. It was elevated to a cabinet-level department in 1872, and was transformed by the Postal Reorganization Act of 1970 into the United States Postal Service as an independent agency in the United States government.

Media in category "Commemorative stamps of the United States"

The following 200 files are in this category, out of 453 total.

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