Created in 1956 for Frank Lloyd Wright’s only skyscraper, this monumental chair is more than a fascinating piece of Modernist history. Lacy Anderson of Exchange Int, the Houston- and Detroit-based gallery offering the chair, says, “It has several components that identify it as a Frank Lloyd Wright piece, but there’s more to it than that. It’s so unique in its design and you can’t really assign it to a period right off the bat. I also like the way people respond when they see it. We work with people, including collectors and interior designers, who have...