GCI SCIENTIFIC PROGRAM REPORT Glen R Cass James R Druzik Daniel Grosjean William W NazaroJf Paul M Whitmore Cynthia L Wittman JUNE 1988 Protection of Works of Art from Photochemical Smog Environmental Quality Laboratory California Institute of Technology Pasadena, California 9II25 The Getty Conservation Institute Scientific Program 4503 Glencoe Avenue Marina del Rey, California 90292-6537