47–57) http://www.raf.mod.uk/rafcms/mediafiles/49848DB1_1143_EC82_2E0567AC78C3FB24.pdf==External links==* 617 Squadron and the Dams Raid – An archival perspective — RAF Museum online exhibition* Barnes Wallis Memorial Trust* The Dambusters (617 Squadron)* Test drops of both Upkeep and Highball — includes Lancaster and Mosquito drops at Reculver and Loch Striven, and fatal US A-26 Invader drop (YouTube)* The bouncing bombs — history, pictures and videos
(2002), "Barnes Wallis's other bouncing bomb Part 2: Target Tirpitz", in "RAF Air Power Review", 5 (3), Autumn 2002 (pp.