 City were relegated again five seasons later , but when O 'Rourke was <unk> as manager before the 1928 – 29 season , they broke several club records to earn promotion back to Division Two . After eight seasons in Division Two , City returned to Division Three , and they remained in the third and fourth tiers of the English football league system until 1985 – 86 . During that time , they endured several periods of financial hardship , and in 1985 , their ground suffered a disastrous fire in which 56 people died , on a day the club and their fans were supposed to be celebrating promotion . 
