The preservation movement:

• Philosophical development

  • • The Athens Charter (met 1931, published 1933)

    • The Venice Charter (met 1964, published 1965)

    • National Historic Preservation Act (1966)

    • The Secretary of the Interior's Standards for the Treatment of Historic Properties (first published ~1979)

• Structural engineering

  • • The ISCARSAH Principles (ratified 2003) and Guidelines

    • A Philosophy for Preservation Engineers by Kelley and Look (published 2005)