Columbus Guides - World Travel Guide: Sao Tome and Principe: Tourist and business travel information with facts on climate, visa, health, passport, currency and customs requirements.
Lonely Planet - World Guide: Sao Tome and Principe: Comprehensive facts and advice for traveling along with background material on the culture and history of this African country.
US State Department - Sao Tome and Principe Consular Information Sheet: Offers Background Notes and travel information including entry and exit requirements, safety and security, crime, health and transport.
Welcome to São Tomé e Príncipe: Travel information. [English, German, Portugese]
Yahoo! Travel - Sao Tome & Principe: Directory and information about hotels, attractions and cities with maps, pictures and travel advice.