I have a letter mailed by a soldier traveling from Jefferson Barracks, Missouri to Camp Wallace Texas -- the cancelation is a partial -- in the 9 o'clock position it reads "NEW" in the 3 o'clock "W.N.D." and in the 6 o'clock "RPO" In the center it reads "TR 5 Mar 22 1941" Does anyone know what railroad and train this letter was canceled on?
Jefferson Barracks in Google Earth show to being South of St. Louis. Carriers going to from St. Louis to Texas would most likely be either the Missouri Pacific or the St. Louis and Southwestern. You can search the web to find passenger schedules those companies were operating during that period of time.
Never too old to have a happy childhood!