Glasgow’s Mitchell Library will have to undergo specialist cleaning after being vandalised. The building – which dates back to 1911 – was tagged with graffiti close to its North Street entrance. STV News The graffiti will need to be specially cleaned. STV NewsGlasgow Life, which operates services within the Mitchell Library, said the graffiti will need to be removed using specialist equipment. A spokesperson said: “The graffiti on the exterior of The Mitchell Library will require specialist cleaning.