Roden Models 619 1/32 Cessna L-19/O-1 Bird Dog Model Aircraft Kit Delivery Van 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

Built size: 11

They had a 4-8-8-4 wheel arrangement

ZIRO 1 PLA PRO White 1

and aided by the most prominent aircraft modelers in Europe

Roden Models 619 1/32 Cessna L-19/O-1 Bird Dog Model Aircraft Kit Delivery Van Mail & Merchandise Service describesRoden Models 619 1 32 Cessna L 19 O 1 Bird Dog Model Aircraft Kit Aircraft in WWI often became obsolete, though having barely taken to the air. The fast pace of invention in aircraft design often led to nothing, and some ideas and developments became outmoded, which a year or two before had been considered as progressive and innovative. However, some design approaches, which might be considered simple in many respects, ensured not only great success