Campaigners will sing Christmas carols with alternative lyrics about the closure of Barnsley Library at a protest in town on Saturday.
A march will assemble at 11am outside the Alhambra Centre.
Marchers will hand in a giant Christmas card to library staff in appreciation of their hard work.
There will be a campaign meeting in the library at 12.30pm.
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The petition against plans to demolish the library to make way for a new sixth-form college has more than 11,000 signatures. It will be handed to the council next week.
The proposals include relocating the library to Wellington House on a temporary basis. A new library is planned in the town centre as part of the long term market redevelopment plan.
