A Science Odyssey: Guglielmo Marconi: Features short biography, photograph, and two related experiments to try at home. From PBS.
Biography of G. Marconi: Biography focuses on the work leading up to the Nobel Prize in Physics with Marconi received in 1909.
Encarta: Marconi, Guglielmo: Provides a short biography and portrait.
Guglielmo Marconi: Transmitting Electrical Signals: Short biography and sketch; information also available in RealAudio format.
Who was Guglielmo Marconi?: Short biography tells how the waves Marconi was able to produce and detect laid the foundation for modern radio.