Both of these musicians and many others are included in a videotape I have produced entitled Music of the Mande, Parts I and II, produced by Original Music. This 60-minute video was shot originally on Super 8 film in 1970 and 1982 and includes a 24-page booklet. Please see VIDEOTAPES for further information.
Some other web sources that cover the kora in depth are:
Another that covers the kora and Mande traditions is: