Now showing: United States - Airmail stamps (1930 - 1939) - 14 stamps.
10. February WM: None Perforation: 11
19. April WM: None Perforation: 11
WM: None Perforation: 10½ x 11
2. October WM: None Perforation: 11
30. June WM: None Perforation: 10½ x 11
22. November WM: None Perforation: 11
15. February WM: None Perforation: 11
14. May WM: None Perforation: 11
16. May WM: None Design: Alvin R. Meissner Perforation: 11