Now showing: United States - Postage stamps (1940 - 1949) - 5 stamps.
10. květen WM: Žádný Perforation: 11 x 10½
![[Transcontinental Railroad, type OM]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/OM-s.jpg)
22. květen WM: Žádný Perforation: 11 x 10½
![[The 125th Anniversary of the First Steamship Crossing the Atlantic, type ON]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/ON-s.jpg)
24. květen WM: Žádný Perforation: 11 x 10½
![[The 100th Anniversary of the First Telegraph Transmitted Message, type OO]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/OO-s.jpg)
27. září WM: Žádný Perforation: 11 x 10½
![[Corregidor Island, type OP]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/OP-s.jpg)
31. říjen WM: Žádný Perforation: 11 x 10½
![[The 50th Anniversary of Motion Pictures, type OQ]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/OQ-s.jpg)
