Helpful Links for Maintenance and Preservation of Historic Masonry
- Historic Masonry Restoration: Butter Joint Repointing by US Heritage Group
- History Masonry Restoration: Repointing Guide by US Heritage Group
- Repointing and Paint Removal by Capitol Hill Restoration Society
- Assessing Cleaning and Water-Repellent Treatments for Historic Masonry Buildings by the National Park Service
- Removing Graffiti from Historic Masonry by the National Park Service
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