The Central Library murals were finished in 1952. They cover the outside of the building, totalling a surface of over four thousand square meters. Their design conveys the historyof Mexican culture through visual symbols. They were constructed by assembling one meter square, metal framed panels with cement mortar in which naturally colored stones gathered throughout Mexico, were inlaid, as well as fragments of man-made blue glass.
Environmental agents have severely damaged the stones, especially the green ones; the iron and steel support elements show exfoliative corrosion; as some panels have warped, the stones have been projected out of their seats, many of them falling down.
Research and data collection are under way. They will eventually produce an accurate diagnosis which will enable the technical committee to establish the basis for the conservation project.
Efforts to preserve this masterpiece are fully justified, be it from the point of view ofits artistic value, its importance within the framework of plastic art applied to architecture or for its worldwide renown.