Barnes Wallis: Biography, with emphasis on his family and personal life.
BBC History: Barnes Neville Wallis: Biography, and links to other related sites.
Sir Barnes Wallis: Biography, with extensive section on the 'bouncing bombs'.
The Dambusters: The bombing of the Ruhr dams with Barnes Wallis's bouncing bombs.
The Night the Dams Burst: Three part history of the RAF's brilliant attack on the Ruhr Dams in May 1943. By David Irving.