Viser nå: USA - Luftpostfrimerker (1918 - 2012) - 4 frimerker.
1930
Winged Globe
10. February VM: Ingen Perforering: 11
![[Winged Globe, type H]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/H-s.jpg)
1930
Graf Zeppelin Issue
19. April VM: Ingen Perforering: 11
![[Graf Zeppelin Issue, type I]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/I-s.jpg)
![[Graf Zeppelin Issue, type J]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/J-s.jpg)
![[Graf Zeppelin Issue, type K]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/K-s.jpg)
