Britannica.com: Guglielmo Marconi - Biography, life, and work of the Italian physicist and inventor of a successful system of radio telegraphy.
Fondazione Guglielmo Marconi - Dedicated to the origins and development of radiocommunications; and the archival resources relating to the history of telecommunications and to Guglielmo Marconi's life. Site in English and Italian.
Marconi Calling - Exploration of the man's life, his scientific discoveries, the impact of wireless, and the development of modern communications.
