Smallest library in the world ?

Heard someone had the idea of transforming a disused phone box into a library - thought to be the first of its kind in Calderdale,thought i would take a look
Residents in the hamlet of Booth decided they wanted to make use of the red kiosk after it was taken out of service a few years ago.
It is compact lending library filled with books and DVDs for the community to enjoy.
open 8am until 8pm every day and then locked up again
Must be one of the smallest libraries in the world.