In addition to issuing standards and guidelines, HDP develops supplemental guidance on other subjects related to the documentation of historic properties and the HABS/HAER/HALS Collection.
Supplemental Guidance
Last updated: September 29, 2023
In addition to issuing standards and guidelines, HDP develops supplemental guidance on other subjects related to the documentation of historic properties and the HABS/HAER/HALS Collection.
Last updated: September 29, 2023