Although the development of central air-conditioning systems some 50 years ago caused substantial attention to be paid to the effective control of the museum environment, interest in air pollution damage to art works predates that development. They discuss individual pollutants (sulfur oxides, nitrogen oxides, etc) as well as categories of indoor pollutants (those emitted from building materials, those emitted by artifacts, etc.). Tables provide data on air quality criteria for museums, archives, and libraries, as well as indoor air pollution damages to specific materials. See also preceding abstract.