Design for a double-curved staircase, consisting of an elevation on the upper half of the drawing and a plan view below. On the top portion of the design, a central straight staircase is shown ...

Plan and elevation of spiral staircases. Details on lower portion of the design. Credit Line Gift of Eugene V. and Clare E. Thaw Date January 1887 Accession Number 2007-53-2 Restrictions & Rights ...