![](http://www.alamy.com/thumbs/6/0B4570B6-1B0B-4739-A4C9-66D46A5B26F2/KYMP9A.jpg)
First day of Airmail Service, May 15, 1918 2649566767 o
Size: 1777px × 1407px
Photo credit: © Len Collection / Alamy / Afripics
License: Licensed
Model Released: No
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