Atlasgeo: Latvia: Animated GIF image.
Flags of the World: Latvia: National, governmental, military, municipal, historical, and proposed flags.
Latvian Institute: National Symbols of Latvia: The Flag: Description and history of the flag.
The Livonian Flag: Image and description of the flag of the Livonian people, a stateless group living in Latvia.
Theodora.com: Flag of Latvia: Images in several sizes.