Historic preservation / conservation vocabulary:
https://mphda.org/glossary-of-architectural-and-historic-preservation-terms/
https://www.nps.gov/history/local-law/arch_stnds_10.htm
European Illustrated Glossary of Conservation Terms for Wall Paintings and Architectural Surfaces (download book) https://www.hornemann-institut.de/doi/2015ewag.pdf
Historic Catalogs
APT Building Technology Heritage Library (curated)
“The Building Technology Heritage Library (BTHL) is primarily a collection of American and Canadian, pre-1964 architectural trade catalogs, house plan books and technical building guides. Trade catalogs are an important primary source to document past design and construction practices.”
Wallpaper
Zuber Papers – scenic and other historic wallpapers using the original woodblocks.
William Morris Archive Wallpapers
Bradbury & Bradbury Wallpapers
Adelphi Paper Hangings – custom historic reproduction wallpaper
Historic Hardware
Metals
Patina formulas for Brass, Bronze, and Copper
How it’s Made