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for air in historic buildings I learned from the work, advice of Peter Brimblecombe. See especially 2010-2012 for historic building interiors...later work is outdoor pollution. Terrific gentleman. https://research-portal.uea.ac.uk/en/persons/peter-brimblecombe ------------------------------ ...

Problem... acidic odor/off gassing in closed bookcase of books (paper, sizing..1760-1900, half of volumes are post-1850) Immediate action...cleaning, airing out cases Question... anyone used charcoal pouches in similar situations, to adsorb odor? (No, de-acidification of the books is not a possibility.) ...

After extensive research and MSDS reading for care of silver 1820+ ... 1) first wash the silver in distilled water and a few drops of (non-citrus) Dawn or Orvus, rinse, dry...might be enough for some pieces (beware though any hollow handles or the like) 2) curatorial prefence is to make your own ...

Agree with those who say leave the lacquering to the professionals. Renaissance Wax is good, though can yellow in the presence of pollution. (How near your site is to auto pollution affects rate of tarnish.) Also excellent, for silver in case display, the antitarnish strips which extend a polish job ...

NY Public Library, Center for the Performing Arts at Lincoln Centerhttps://www.nypl.org/locations/lpa Sara Weissman