The Flag Bulletin (ISSN 0015-3370) is the oldest and most respected journal in vexillology. Since 1962, The Flag Bulletin has been the primary source for those who are serious about learning all aspects of flag history, symbolism, usage, and design. Published four times a year, it provides in-depth illustrated articles on flags of every era, area, and type. Each issue is documented and thorough. Overwhelmingly, the material published is found in no other source.
The Flag Bulletin returns to its regular publishing schedule in 2021 with the publication of the proceedings of HemisFlag: The 28th International Congress of Vexillology.