Now showing: United States - Airmail stamps (1918 - 2012) - 2 stamps.
2009
National Parks - Self-Adhesive Stamps
28. June WM: None Sheetsize: 20 Design: Edith Kessler Engraving: Avery Dennison, Clinton, SC. Perforation: Rouletted 11
![[National Parks - Self-Adhesive Stamps, type YVA]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/YVA-s.jpg)
![[National Parks - Self-Adhesive Stamps, type YVB]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/YVB-s.jpg)
