The Art of Building the Berimbau - Covers traditional and modern materials and methods.
Berimbau - Article by Richard P. Graham and N. Scott Robinson covering history, popular and traditional Brazilian use, and recent developments.
Capoeirista.com: Berimbau - Photograph, description, and audio samples of the capoeira rhythms. [English/Portuguese]
Rhythmweb: The Brazilian Berimbau - Description and illustration, with links.