Figure 18  The enclosed staircase in the Mabee House, Rotterdam Junction, New York, 1710-1750. (Courtesy, Mabee House Historic Site, Schenectady County Historical Society; photo, Gavin Ashworth.) This staircase is in the early-eighteenth-century addition to the house. Although enclosed, the stair has framed stringers, handrails, and treads and risers. The second storey of the house was not finished for occupancy until the late nineteenth century. Before that time it was used for storing tools and produce.