Now showing: United States - Airmail stamps (1918 - 2012) - 2 stamps.
1967
The 100th Anniversary of the Alaska Purchase
30. March WM: None Perforation: 11
![[The 100th Anniversary of the Alaska Purchase, type AT]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/AT-s.jpg)
1967
Birds - Columbia Jays by John James Audubon
26. April WM: None Perforation: 11
![[Birds - Columbia Jays by John James Audubon, type AU]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/AU-s.jpg)
