Mammoth BBC listings task
Researchers are poring over thousands of back copies of the Radio Times to put together a list of every BBC programme ever broadcast.
It is part of a bid to create a complete online broadcast history of the corporation dating back to its foundation in 1922.
Project manager Helen Papadopoulos said the Radio Times was "an ideal place to begin".
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Hide AdOn a BBC blog, she said: "It contains a record of everything we intended to broadcast – even if what actually went on air wasn't what we planned to show – and it is in a structure and format that people readily recognise, with basic but consistent details."