Author/Creator
- United States. National Park Service140
- Historic American Buildings Survey75
- United States. National Park Service. Preservation Assistance Division55
- United States. Advisory Council on Historic Preservation46
- Project Muse41
- National Trust for Historic Preservation in the United States35
- United States. National Park Service. Southeast Regional Office. Cultural Resources Division34
- ebrary, Inc33
- National Trust (Great Britain)29
- United States. National Park Service. Technical Preservation Services Branch27
- Royal Commission on Historical Monuments (England)22
- United States22
- Drake, Samuel Adams, 1833-190521
- Historic American Buildings Survey/Historic American Engineering Record21
- Landesamt für Denkmalpflege Hessen21
- Park, Sharon C.21
- English Heritage20
- United States. National Park Service. Technical Preservation Services Division20
- Whitefield, Edwin, 1816-189216
- Fisher, Charles E. (Charles Elbert), 1947-15