Colonization Cheats: Article by Al Giovetti.
FreeCol: An open source clone. Includes news, screenshots, and documentation.
Game Revolution: Offers cheats.
Gamefaqs: resources include an FAQs, strategy guides, and cheats for the Amiga version.
MobyGames: A game description and review [3.9/5] with screen shots and credits.
The Spoiler Centre: Provides hints and cheats and a review.
The Unofficial Microprose Colonization: Features strategies, cheats, downloads, maps, and scenarios.