Atlas O Premier 3001777 O Scale Madison Heavyweight Western Maryland RPO 184 Code 70 Switch Mail & Merchandise Service describes Mail & Merchandise Service describes rail express service and merchandise traffic on railroads from the early 1900s through 1960s when railroad personnel handled packages and merchandise — everything from baby chicks and cornflakes to money and machinery — and got them to their final destination Bachmann's Trinity 5161 expands on their line of modern day freight rolling stock and features separately applied components such as roof walks and brake wheels Constant Voltage Overhead LED Interior Lighting End of Car Diaphragms