USA
Viser nu USA - Luftpostfrimærker (1918 - 2012) - 1 frimærker.
1988
Avaition Pioneers - Samuel Pierpont Langley, 1834-1906
14. maj VM: Ingen Design: K. Dallison. Perforeringer: 11
![[Avaition Pioneers - Samuel Pierpont Langley, 1834-1906, type CM]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/CM-s.jpg)
