Zobrazujú sa: Spojené štáty - letecká pošta - známky (1930 - 1939) - 14 známky.
10. február WM: nikto Perforácia: 11
![[Winged Globe, typ H]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/H-s.jpg)
19. apríl WM: nikto Perforácia: 11
![[Graf Zeppelin Issue, typ I]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/I-s.jpg)
![[Graf Zeppelin Issue, typ J]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/J-s.jpg)
![[Graf Zeppelin Issue, typ K]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/K-s.jpg)
WM: nikto Perforácia: 10½ x 11
![[Winged Globe, typ H1]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/H1-s.jpg)
![[Winged Globe, typ H2]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/H2-s.jpg)
2. október WM: nikto Perforácia: 11
![[Zeppelin, typ L]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/L-s.jpg)
30. jún WM: nikto Perforácia: 10½ x 11
![[Winged Globe, typ H3]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/H3-s.jpg)
22. november WM: nikto Perforácia: 11
![["China Clipper" over the Pacific, typ M]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/M-s.jpg)
15. február WM: nikto Perforácia: 11
![["China Clipper" over the Pacific, typ M1]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/M1-s.jpg)
![["China Clipper" over the Pacific, typ M2]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/M2-s.jpg)
14. máj WM: nikto Perforácia: 11
![[Eagle, typ N]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/N-s.jpg)
16. máj WM: nikto Dizajn: Alvin R. Meissner Perforácia: 11
![[Winged Globe - New edition, typ O]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/O-s.jpg)