The United States Post Office Department was the predecessor of the United States Postal Service, established in 1792. From 1872 to 1971, it was officially in the form of a Cabinet department. It was
First U.S. postage stamps, authorized by Congress March 3, 1847. Earliest known use of the 5¢ Franklin is July 7, 1847, and the 10¢ Washington is July 2, 1847.
Mineral Wells, Texas, post office, built between 1911 and 1913
Mail truck loaded with gold leaving the New York City Assay Office in 1941
The United States postmaster general is the chief executive officer of the United States Postal Service. The PMG is responsible for managing and directing the day-to-day operations of the agency.
United States Post Office Department
…the United States Postal Service, established in 1792. From 1872 to 1971, it was officially in the form of a Cabinet department. It was headed by the postmaster general. The Postal Service Act, signed by U.S. president George Washington on February 20, 1792, established the department. Postmaster General John McLean…
David P. Steiner