Historic American Buildings Survey (HABS)Since 1933 the National Park Service have recorded America's built environment in multiformat surveys comprising more than 581,000 measured drawings, large-format photographs, and written histories for more than 43,000 historic structures and sites dating from Pre-Columbian times to the twentieth century. This online presentation of the HABS/HAER/HALS collections includes digitized images of measured drawings, black-and-white photographs, color transparencies, photo captions, written history pages, and supplemental materials.
Composed of three collections:
1. Historic American Buildings Survey
2. Historic American Engineering Record/Historic
3. American Landscapes Survey