Conservation and restoration Library materials 143 Books 96 Archival materials 84 History 61 Architecture 46 Historic preservation 45 more ... Historic sites 44 Manuscripts 43 Cultural property 42 Historic buildings 39 Digital preservation 35 Protection 33 Archives 32 Paper 31 Preservation 31 Library buildings 29 Photographs 29 Emergency management 28 Libraries 28 Safety measures 28 Antiquities 24 Art objects 23 Management 23 Bookbinding 20 Museum conservation methods 20 Collection and preservation 17 Electronic records 17 Art 16 Planning 16 less ...