Advisory Council on Historic Preservation (AHCP)
African-American Heritage Preservation Foundation
The American Architectural Foundation (AAF) and the Octagon
The American Institute for Conservation of Historic and Artistic Works
Association for Preservation Technology (APT)
ePreservation
GSA Historic Preservation
Heritage Emergency National Task Force
Heritage Preservation
Historic Preservation Booklist
International Council on Monuments and Sites (ICOMOS)
Library of Congress – Preservation Collection
Mayors' Institute on City Design (MICD)
National Association of Tribal Historic Preservation Officers (NATHPO)
National Building Museum
National Conference of State Historic Preservation Officers
National Endowment for the Arts (NEA)
National Park Service, Cultural Resources
National Park Service, HABS/HAER/HALS
National Park Service, National Center for Preservation Technology and Training (NCPTT)
National Park Service, Technical Preservation Services
National Preservation Institute
National Trust for Historic Preservation (NTHP)
National Trust for Historic Preservation, Community Partners Program
National Trust for Historic Preservation, Library Collection
National Trust for Historic Preservation, National Main Street Center
Preservation Action
Society of Architectural Historians (SAH)
Whole Building Design Guide
Sarasota Architectural Foundation