Search the Archive

Search the National Gallery Archive containing records of the Gallery's activities from its foundation in 1824 to the present day. Find out more about the National Gallery Archive.

Record NG6/3/207

Archive reference number NG6/3/207

Letter to Mr Edmond Voilliez

Date 29 Dec 1864

Re the Pettenkofer process. It is not a cleaning process: it renovates varnish only. The NG do not wish any pictures to be cleaned by any process

Record type Item

Your list will only be saved temporarily. Inactivity of more than an hour could result in the loss of your list. If you would like to keep a record of your list, we suggest you email it to yourself.

Your list of records will be sent to us if you request an appointment, and a summary will be included in your appointment email notification.