BBC: Henry VI (1421 - 1471): Biography of the king who reigned from 1422 to 1461 and from 1470 to 1471 and whose incompetence helped cause the Wars of the Roses.
Henry VI: Biography for the king of England (1422–61, 1470–71).
Kids' Zone: King Henry VI: A profile of the king aimed at children.
The Lancastrians: Henry VI: Account of the reign of Henry VI.