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Isaac Kremer/ January 14, 2018/
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A glossary/spiral-staircase/" class="glossaryLink" data-cmtooltip="aa37813d6ae4e84a7696ec023f69b33a" target="_blank" >spiral staircase generally of stone, whose steps wind around a central shaft or newel; a screw-stair/" class="glossaryLink" data-cmtooltip="9ea33f2da0a1bc22bf5e6fd2650e8fb8" target="_blank" >screw stair. Photo from Johnson Museum of Art, Cornell University, Ithaca, New York, 2023. (Harris, 1977)