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: August 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)	34,472	202,062	3,774	142,024	63,517	8,585	All HABS Documentation
Historic American Engineering Record (HAER)	10,709	121,550	2,133	115,583	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:	46,256	331,680	6,198	273,980	72,204	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

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Last updated: August 2025