kitmasterbloke: Smithsonian National Postal Museum, Washington DC; 249 de Haviland DH4 Mail Plane derivative
kitmasterbloke: Smithsonian National Postal Museum, Washington DC; Wiseman-Cooke Biplane 1911
kitmasterbloke: Smithsonian National Postal Museum, Washington DC; NX2311 Stinson SR-10F Reliant