Reference https://mrmhadams.typepad.com/blog/2014/04/-harbor-hill-hauteur-and-hurt-from-the-gilded-age-part-vi.html accessed 24 Apr 2020 (edited slightly):
Harbor Hill's superb oak staircase, like the wainscoting, far, far darker than shown here, occupied the entirety of the lower levels of the south-east pavilion. No more so than in the great hall, with its pendant ornamented molded plaster ceiling, did the staircase, with parapets of luxuriantly scrolling, pierced arabesque, remotely reference "Louis XIV and Henri II precedents." Instead, it had an English pedigree, derived from seventeenth century Sudbury Hall and Cassiobury Park.
Depicting King Herod's slaughter of the innocents, the large Flemish Tapestry seen in this image dated to the late sixteenth century. François Boucher, the celebrated French painter who lived from 1703 to 1770, as director of the Gobliens' factory, sometimes supplied cartoons for tapestries. No "Boucher tapestry" could possibly have been made before his birth. That would be required, if this had been a "Boucher tapestry," as Wilson and Craven both say.
Sudbury Hall's early seventeenth century staircase, along with the late seventeenth century stair from Cassiobury Park, were models for what was done at Harbor Hill. The latter stairway is today installed at the Metropolitan Museum of Art.
