Painting Historic Interiors by Sara B. Chase. The Repair, Replacement, and Maintenance of Historic Slate Roofs by Jeffrey S. Levine. The Preservation and Repair of Historic Clay Tile Roofs by Anne E. Grimmer and Paul K. Williams. One consequence of the National Preservation Act of 1966 is the Preservation Briefs series published by the Preservation Assistance Division of the National Park Service. Currently there are 30 publications in the series, each of which provides a wealth of information on a single topic having to do with some aspect of preserving historic buildings. The three most recent additions to the series extend this tradition into the realm of interior painting (volume 28), and the repair, replacement, and maintenance of slate and