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Research and Technical Preservation Guidance

The Department of Archaeology & Historic Preservation (DAHP) offers the following links to more information about the most frequently asked topics relating to the preservation of historic sites and structures across Washington.  These links are distributed for the convenience of property owners, planners, and others who wish to learn more about the preservation of historic resources. Please note that DAHP serves only in a referral capacity and does not guarantee or endorse any of the products mentioned.