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|Archive reference number||NGA11/1/1|
|Date||30 Apr 1853|
Undated notes on the poor condition Bolton found paintings to be in during a visit to the National Gallery in the summer of 1849, including discussion of the consequences of coating pictures with 'maquilp' or boiled oil.
Also draft of a letter to Colonel Mure [Chair of the Select Committee on the National Gallery], 30 Apr 1853, discussing an answer he gave before the Committee the previous day re cleaning and preservation of pictures, and providing detailed descriptions of his methods which he writes differ materially from those of Mr Seguier and offering to state these before the Committee if necessary