지금 보여주기: 미국 - 항공 우표 (1918 - 2012) - 2 우표.
1967
The 100th Anniversary of the Alaska Purchase
30. 3월 WM: 없음 절취선: 11
![[The 100th Anniversary of the Alaska Purchase, 유형 AT]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/AT-s.jpg)
1967
Birds - Columbia Jays by John James Audubon
26. 4월 WM: 없음 절취선: 11
![[Birds - Columbia Jays by John James Audubon, 유형 AU]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/AU-s.jpg)
