License, verbatimCC0
The Smithsonian Institution: Open Access image dedicated to the public domain under Creative Commons Zero (CC0); usage.access=CC0 on the media record itself.
Daniel Marot, French, active in the Netherlands and England, 1661–1752. Rampes d'Escalliers (Handrails), in Nouveau Livre de Serrurie (New Book of Ironsmithing), ca. 1700. Smithsonian Institution.