• A State Historic Preservation Officer (SHPO), a Tribal
Historic Preservation Officer (THPO), a Federal Preservation
Officer (FPO), a scholar, a private owner, or an interested
member of the general public, writes a letter of inquiry to the
National Park Service. • NHL staff review the letter to
determine if the property appears to meet the criteria for an
NHL. If the property has the potential to become an NHL, the
staff provides the preparer with detailed guidance as the
nomination is written. • Working with the preparer, staff from
the National Historic Landmarks program edit and review the
nomination. • Subject matter experts and scholars from across
the nation review the nomination. Their suggestions and
assessments are incorporated into the nomination. • The
Landmarks Committee reviews the nomination before making a
recommendation to the National Park System Advisory Board. • The
National Park System Advisory Board reviews the nomination
before making a recommendation to the Secretary of the Interior.