Berlin: Underground Electric Mail Roads (1909)

This short article was published in the Madrid Philatelico in 1909: “The Madrid Philatelico says that the postal service of Berlin is so overloaded with work that the authorities project the construction of two underground electric lines to be used exclusively for letter carrying. The first will take a circular route touching the principal offices of the capital; the second will bring the central office into direct communication with the new post office and the Potsdam post office.”

Read this article...