http://www.traditional-building.com/Previous-Issues-12/AprilProject12Henson.html   PROJECT Bleecker+Bond Building, New York, NY ARCHITECT Scott Henson Architect, LLC, New York, NY; Scott Henson, principal By Eve M. Kahn Victorian cast-iron façades were the first curtain walls, maximizing natural light and column-free interior space. When poorly maintained, they can become unstable sieves. Scott Henson, the head of a five-person preservation architecture firm in New York City,