----------------------------Original message---------------------------- Can anyone recommend a source which describes/compares the relative levels and types of offgassing, and other harmful qualities of various bookshelf construction materials : painted / unpainted wood; baked enamel on metal; glass; etc. Please reply directly to me at the address below; thanks for your help. Phil Heagy Menil Collection Library 1511 Branard St. Houston, TX 77006 PH: (713) 525-9426 FAX: (713) 525-9444 e-mail: [log in to unmask]