The Department of the Interior (http://www.doi.gov/) oversees several units that provides a variety of useful information on buildings, landmarks, and historic sites. Its mission is to preserve the cultural, historical, and environmental landscape of the United States. 

The National Park Service (http://www.nps.gov/) has programs in archeology, ethnography, historic places, structures and landscapes, history, maritime, and museum management. Specific sites on National Park Service ParkNet pages include: 
National Register of Historic Places (www.cr.nps.gov/nr/nrhome.html) 
National Register Travel Itineraries (www.cr.nps.gov/nr/tourism.html) 
Historic American Buildings Survey (www.cr.nps.gov/habshaer) 
Historic American Engineering Record (http://www.cr.nps.gov/habshaer/haer/) 
Historic Landscape Survey (http://www.cr.nps.gov/nhl/) 
Historic and Prehistoric Structures in the Parks (www.cr.nps.gov/phad/lcs.html)
Publicly Accessible Lighthouses (www.cr.nps.gov/history/maritime/ltaccess.html)

Historic American Engineering Record 
Location: Mic. &Docs. RBD Library, LADC: various numbers
"The Historic American Engineering Record, established in 1969, documents America's industrial, maritime and engineering history. HAER produces measured and interpretive drawings, historical reports, and large-format photography of significant sites nationwide." These materials are shelved in various places because they were produced in collaboration with public and private agencies. Link directly to HAER-NET and get more information on HAER projects and publications.

 
Historic Resource Study. Washington, D.C.: Department of the Interior.
Location: Mic. & Docs.: I 29.58/3:(various numbers) 
These studies "treat the historic resources of the parks in a holistic manner, establishing the relevant historic context, and containing the information necessary to list all of the eligible resources in the National Register of Historic Places." The studies include maps, photographs, and bibliographies. 

 
Historic Structures Report. Washington, D.C.: Department of the Interior.
Location: Mic. & Docs.: I 29.88:(various numbers) 
These studies may includes maps, photographs, and bibliographies. Some of these publications are housed in the LADC under individual call numbers.
 
Preservation Briefs. Washington, D.C.: Department of the Interior.
Location: Mic. & Docs.: I 29.84:(various numbers) 
assist owners and developers of historic buildings in recognizing and resolving common preservation and repair problems prior to work. The Briefs are especially useful to preservation tax incentive program applicants because they recommend those methods and approaches for rehabilitating historic buildings that are consistent with their historic character. If the NPS site is down, try Historic Home Works for an alternate site.
 
Preservation Case Studies. Washington, D.C.: Department of the Interior.
Location: Mic. & Docs.: I 29.70/2:(various numbers) 
Subjects include Maymont Park Italian Garden, Olmsted's Jamaica Pond Boathouse, and rehabilitating historic hotels or office buildings. Photographs, architect's specifications, and brief histories of the projects are included. 
 
Preservation Planning Series. Washington, D.C.: Department of the Interior.
Location:  Mic. & Docs.: I 29.70/3: 
Includes such topics as directions in rural preservation, state program overviews and state historic preservation reviews. 
 
Weeks, Kay D. and Anne E. Grimmer. The Secretary of the Interior's Standards for the Treatment of Historic Properties with Guidelines for Preserving, Rehabilitating, Restoring & Reconstructing Historic Buildings. Washington, D.C.: U.S. Department of the Interior, National Park Service, Cultural Resource Stewardship and Partnerships, Heritage Preservation Services, 1995.
Location:Mic. & Docs (1st Floor): I 29.9/2:H 62/6 
These standards apply to all proposed development grant-in-aid projects assisted through the National Historic Preservation Fund, and are intended to be applied to a wide variety of resource types, including buildings, sites, structures, objects and districts. An earlier (1979), less illustrative edition, is shelved in Mic. & Docs.(1st Floor) under the number I 70.8:St 2.

 Journals 

CRM: Cultural Resource Management (http://www.nps.gov/crweb1/crm/crm-hom.htm), includes information on Federal, state, tribal, local, and international preservation programs; preservation treatment; management, protection, and interpretation of cultural resources; preservation legislation; information management; publications, training, conferences; and news notes, opinions, and letters. CRM is also located in the Mic. & Docs. Government Microfiche collection under the Superintendent of Documents number: I 29.86/2:

The Smithsonian Preservation Notes (http://www.si.edu/organiza/offices/oahp/spq/start.htm), a quarterly newsletter, is published by the Smithsonian Institution Office of Architectural History and Historic Preservation (OAHP). The publication reports on issues of historic preservation and architectural history. The Smithsonian Preservation Notes were formerly called the Smithsonian Preservation Quarterly. OAHP maintains Internet editions of select Quarterly issues available via the World Wide Web.