CIA - The World Factbook: Clipperton Island - Features map and brief descriptions of the geography, people, government, economy, communications, transportation, military and transnational issues.
»NationMaster - Clipperton Island - Profile includes information for various aspects of the country, with a special emphasis on statistics and rankings..
»Wikipedia - Clipperton Island - Hyperlinked encyclopedia article offers a map, description and some history of the island..