Inside a Manhattan Home Built on Mid-Century Furniture Icons

The magazine executive-turned-design guru has just given me a tour of his newly renovated Upper East Side apartment in Manhattan, the rooms of which are laden with museum-quality furniture and objects, running the gamut from iconic to obscure, that certainly attest to his passion. But, as interiors aficionados might expect, the apartment that Mitchell shares with his wife, the editor Pilar Guzman, is nothing like a chilly museum (not even the grand Metropolitan around the corner) – not over...