25 years ago: Striking teachers in the Bradford metro area disrupted classes for hundreds of exam pupils in the run up to their O and A-Levels.

50 years ago: Keighley sought to become a county borough by taking in five neighbouring urban districts and two or more of the parishes in the Skipton Rural area.

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1968: The first decimal coins appeared in Britain. They were the 5p and 10p pieces which replaced the old one shilling and two shilling coins.

1984: The United States announced the discovery of the AIDS virus.