The Railroad Post Office cars were fixtures on many U.S. passenger trains from the 1860s through 1967.Great Britain: The Travelling Post Offices (1894)
In this article, taken from The Ludgate Magazine (London, 1899), we have a veritable feast for collectors of TPOs. It is certainly unusual to see the operations of travelling post offices in the nineteenth century. The postal system of the country may be taken as part and parcel of the railway, for the G.P.O. would [...]
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This historic picture postcard was prepared for the 1933 Century of Progress Exhibition in Chicago.
The following rare account of Chinese TPOs by Chu Tong was first published in 1983. 
Railway Post Office Demonstration
On September 20, 2008 Illinois Railway Museum presented a day dedicated to the Railway Mail Service and Railway Post Office cars. Back in the day, mail was not only carried by rail but in some cases was sorted enroute aboard Railway Post Office cars or cars with an RPO compartment. Since some trains didn’t stop [...]
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