Figure 25 Armchair, Philadelphia, Pennsylvania, 1773. Unidentified ring-porous hardwoods, tulip poplar, and maple. H. 37 1/4", W. 21 3/4" (seat), D. 16" (seat); seat height: 17 1/2"; seat depth/seat width: .737; rectangular rail width: 1.51"; rail thickness: .81"; arm support angle: 15°. Courtesy, Independence National Historic Park; photo, Gavin Ashworth.) The only pins in the chair are those used to secure the hoop to the arm rail. This chair proves that Windsors with wide, strong rails were made in Philadelphia before the American Revolution.