Blackwell speced copper roofing for the siding on this University of Arkansas clubhouse. A strong vertical pattern in the metal sheathing contrasts with the building's tapered horizontal line. “We really like metals that are reactive to the atmosphere,” Blackwell says. He often looks to local artisans with a knack for manipulating materials. Franklin, he says, is “willing to work with us on unusual ideas and do them economically.” Franklin & Son, 479.267.5544.