HABS/HAER/HALS Collection Statistics

New documentation is typically added to the HABS/HAER/HALS Collection on a quarterly basis. This page will be updated accordingly.

Collection Counts by Program

Last updated: June 2025
Program Surveys Black & White Photographs (from Large-Format Black & White Negatives) Color Photographs (from Large-Format Color Transparencies) History Pages Measured Drawings (Counted by Sheet) Field Notes (Counted by Folder) URL
Historic American Buildings Survey (HABS) 34,455 202,062 3,776 142,026 63,533 8,585 All HABS Documentation
Historic American Engineering Record (HAER) 10,709 121,551 2,133 115,598 7,306 2,757 All HAER Documentation
Historic American Landscapes Survey (HALS) 1,075 8,068 291 16,373 1,381 242 All HALS Documentation
Totals: 46,239 331,681 6,200 273,997 72,220 11,584 Entire Collection

Survey Counts by State/Jurisdiction

HABS/HAER/HALS Survey Count by State or Other Jurisdiction
State or Other Jurisdiction Survey Count

Last updated: June 2025

Last updated: June 26, 2025