This item, which is just a piece of an envelope or wrapper with a stamp on it, is largely a mystery to me. It was postmarked at the Rome,...

Between August 23, 1886 and June 30, 1894, the US Post Office issued a 2-cent letter sheet with an imprinted stamp that depicted Ulysses...

Beginning in 1855, the Post Office provided a registry service to more securely move high-value matter through the mail system....

This envelope was probably mailed sometime around 1854, and unless the sender made a mistake in calculating the amount of postage needed,...

The Universal Postal Union (UPU), which was organized in 1874 and today is a specialized agency within the Union Nations, coordinates...