GSM article on Air Letter Sheets of Burma

I published my study report on the Burma's air letter sheets in GSM, 2019 May issue.  It is also the beginner's guide to air letter sheets of Burma (Myanmar) covering from first issue of 1946 to last issue of 2001.

First page of an article

Toe Kyaw Kyar, "The Development of Burma's Letter Sheets: A Brief History", Gibbons Stamp Monthly, pp. 62-65, May 2019.