L-Istati Uniti
Muri Bhalissa: L-Istati Uniti - Bolol tal-posta ta' l-ajru (1918 - 2012) - 1 bolol.
1972
The 100th Anniversary of the National Parks System
WM: Xejn Disinn: Paul Rabut Perforazzjoni: 11
![[The 100th Anniversary of the National Parks System, Tip BE]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/BE-s.jpg)
