G. B. BOMB DELAYED. 1941 cover to Skipton, Yorkshire, with a 2½d cancelled SILSDEN 14 MAR 41 that was at Leeds Post Office on the night of 14th March when, over a 2½ hour period, 40 German bombers attacked Leeds with incendiary bombs and then high explosive bombs. Over 4500 houses were damaged and 65 people were killed. Mail recovered from this incident received a boxed cachet ‘DELAYED THROUGH / ENEMY ACTION’. A rare cover from this incident, less than 10 believed to exist.