• Federal and National Guides to Assistance
  Many Federal agencies indirectly support historic preservation. Many non-Federal programs of national scope provide assistance to stewards of historic properties.

• Monitoring Conditions and Integrity
  The National Park Service monitors the condition of National Historic Landmarks. The latest information may be found in the online database under Search for an NHL and in the biennial updates under News in the homepage.

• Technical Publications for Landmarks
  The National Park Service produces a wide variety of technical publications to assist the public in caring for their historic properties.

• NHL Network Newsletter
  The National Park Service published this newsletter for stewards and friends of NHLs from 1998 through 2002. Some issues are archived in PDF format.

• Maritime National Historic Landmarks
  The National Maritime Initiative provides in-depth information about National Historic Landmark vessels and lighthouses.

• National Center for Preservation Technology and Training
  The Center provides online resources and links to research, information and educational opportunities in historic preservation.