Columbia subject headings:
Art--Conservation and restoration.
Paper--Preservation.
Harvard subject headings:
Art--Matting--Congresses.
Drawing--Conservation and restoration--Congresses.
Museum conservation methods--Congresses.
Museum storage facilities--Congresses.
Paper--Preservation--Congresses
Photographs--Trimming, mounting, etc.--Congresses.
Prints--Conservation and restoration--Congresses.
Princeton subject headings: