Operation OYSTER, the daylight attack on the Philips radio and valve works at Eindhoven, Holland, by No. 2 Group. Douglas Bostons fly over the burning Emmasingel lamp and valve factory at the height of the raid. The works were so severely hit that full production was not resumed for six months. C 5755 Part of AIR MINISTRY SECOND WORLD WAR OFFICIAL COLLECTION No. 2 Group RAF