Atlasgeo: Greece: Animated GIF image.
Flags of the World: Greece: National, historical, military, and former subnational flags.
Greek Flags, Maps, and Pictures: Images of current and past flags.
History and Different Flags of Greece: Images of various flags and historical information.
Theodora.com: Flags of Greece: Images in several sizes and links to country facts.
World Flag Database: Greece: National flag and country details.