The Four-cent Prexie
Domestic airmail postcard rates
The domestic airmail postcard rate was four cents from January 1, 1949 until August 1, 1958. This postcard was sent airmail from Montana to Iowa in 1949.
Posssessions and territories used the same rates as the continental U.S. beginning October 1, 1946. This postcard was sent from Charlotte Amalie in the Virgin Islands to Connecticut in 1951.
This postcard was sent airmail from the mainland to Hawaii in 1951.
A postcard sent airmail within a territory (Alaska) in 1950.
Domestic rates applied to, from and between APOs, RPOs and the like as well. This is a card sent from Korean APO 902 in 1953.