In the early '60s, EL operated a pair of Hoboken-Chicago mail and express trains, originally known as the Atlantic Express (eb - #8) and Pacific Express (wb - #7). The trains typically comprised 10+ cars with one or more steam heat pass-through equipped dual trailer piggyback/container flats and either an ex-Erie Stilwell rider coach or ex-DL&W unstreamlined coach bringing up the rear. Tickets were sold to passengers until 1965 but as there was no dining accommodation on board, the EL timetables indicated food could be purchased at various stations during 15-30 minutes stops where mail load/unloading/switching activity was significant (Binghamton, Youngstown, Marion). After 1965 these trains continued to operate as trains #3 and #4 with roughly the same consist but without carrying passengers until some time in the later '60s when they were discontinued.
Here's a link to a relevant article on the Model Railroader web site that includes a picture of a typical Pacific Express consist: http://mrr.trains.com/how-to/prototype- ... operations