See the following,

Chambers, J. Henry
  1976  Cyclical Maintenance for Historic Buildings.  Office of Archeology
        and Historic Preservation, National Park Service, U.S. Department
        of the Interior.  Washington:  Government Printing Office.

I bought my copy directly from GPO for $2.75 in 1978, so don't know whether
it is still available for sale.

Mike


--
Mike Jacobs * Arizona State Museum * University of Arizona * Tucson, AZ  85721
Tel: (602) 621-6312 * Fax: (602) 621-2976 * Email: [log in to unmask]