of the TPO & Post Office Railway, Ian Allan Publishing, London. Further reading Bergman, Edwin B. (1980) 29 Years to Oblivion, The Last Years of Railway Mail Service in the United States, Mobile Post Office Society, Omaha, Nebraska. at Internet archive at Internet Archive National Postal Transport Association. (1956) MAIL IN MOTION, Railway Mail Service Library, Boyce, Virginia. Portion available as a video clip at Romanski, Fred J. The Fast Mail, History of the Railway Mail Service, Prologue Vol. 37 No. 3, Fall 2005, College Park, Maryland. Pennypacker, Bert The Evolution of Railway Mail, National Railway Bulletin Vol. 60 No. 2, 1995, Philadelphia. U.S. Post Office Department. (1956) MEN AND MAIL IN TRANSIT, Railway Mail Service Library, Boyce, Virginia. Portion available as a video clip at External links Great Northern Railway Post Office Car No. 42 — photographs and short history of an RPO built in 1950. Mobile Post Office Society TPO and Seapost Society History of rail transportation in the United States Passenger railroad cars Philatelic terminology Postal history Postal infrastructure Postal services Postal vehicles 1862 establishments in the United States