The Dambusters - The bombing of the Ruhr dams with Barnes Wallis's bouncing bombs. - http://www.historylearningsite.co.uk/dambusters.htm
The Night the Dams Burst - Three part history of the RAF's brilliant attack on the Ruhr Dams in May 1943. By David Irving. - http://www.fpp.co.uk/bookchapters/articles/dambusters/1.html
Barnes Wallis - Biography, with emphasis on his family and personal life. - http://www.chm.bris.ac.uk/webprojects2001/moorcraft/Barnes%20Wallis.htm
BBC History: Barnes Neville Wallis - Biography, and links to other related sites. - http://www.bbc.co.uk/history/historic_figures/wallis_neville_barnes.shtml
Sir Barnes Wallis - Biography, with extensive section on the 'bouncing bombs'. - http://www.computing.dundee.ac.uk/staff/irmurray/wallis.asp