Exceptional stacks

Here in the Library at Amgueddfa Genedlaethol Caerdydd - National Museum Cardiff we have two very rare examples of original 1920s iron roller racking.  They are still in perfect working order, although do get incredibly heavy when full. The stacks always remain cool in the summer, which is good as the Library can get very stuffy. However, they are bitterly cold throughout the winter, and on a dark wintry afternoon one might almost say... "spectrally" so!