Examples of air letter

• In the homeward direction, an air letter service has been provided and an airgraph service will also shortly be available.

• Civil air letter cards and surcharged air-mail go all the way by air by this route.

• Does an airgraph take longer than an air letter?

• I should like an assurance on the future of the bluey—the air letter that service personnel are permitted to send to their families free of charge.

• From 1933 to 1948, mandate services included airmail stamps and, as an innovation, "air letter cards".

• Thereafter, the term "air letter" quickly faded from use.

• There has been no change in the conveyance rate paid to airlines for the conveyance of air letters or of any other type of airmail.

• Owing to the need for processing airgraphs, they take about four days longer on the average than air letters to reach their destination.