Atlasgeo.net: Congo-Brazzaville - Animated GIF image.
Atlasgeo.net: Congo-Kinshasa - Animated GIF image.
Flags of the World: Congo - Current and historical flags, and relevant legislation.
Flags of the World: Democratic Republic of Congo - Current, historical, and separatist movement flags.
Theodora.com: Flag of Congo - Images in several sizes and links to country facts.
Theodora.com: Flag of the Democratic Republic of Congo - Images in several sizes and links to country facts.
World Flag Database: Congo-Kinshasa - Current and previous national flags, and country details.