Archer Cowley’s gravity-assisted book-transfer system for delivering books from van through basement window to the Bodleian’s book stacks:

This shot is not properly in focus. I must not have allowed enough time fo the camera to come to focus. I will replace it in due course. The caption says: Book  trolleys on rollers, self-propelled down sloping platform through basement window to book stacks”.

qaa© Philip B Archer 2014