How They Escaped -- Bearded Eric Williams brings to life for an enthralled schoolboy audience one of history's most amazing escape stories - the drama of ' The wooden Horse ' at the imperial war Museum, Lambeth, London, when he manded over this replica today (Thursday). Williams, who was a prisoner of war in Stalag Luft III, wrote the story of the exploit in which airmen escaped from the camp in 1944. A Perspex window has been cut in the side of the replica to show how men were concealed inside