• HABS (Historic American Buildings Survey) was established by the National Park Service, American Institute of Architects, and Library of Congress in 1933 to document America’s architectural heritage.
  • HAER (Historic American Engineering Record) was established by the National Park Service, American Society of Civil Engineers, and Library of Congress in 1969 to document America’s engineering and industrial heritage.
  • HALS (Historic American Landscapes Survey) was established by the National Park Service, American Society of Landscape Architects, and Library of Congress in 2000 to document America’s landscape heritage.
  • CRGIS (Cultural Resources Geographical Information Systems) was established by the National Park Service in 1989 to institutionalize the use of GIS, Global Positioning Systems (GPS), and Remote Sensing technologies in historic preservation.