Allen Dorough was cleaning out a barn near Birmingham, Ala., when he found 10 metal boxes full floor plans, advertisements, family portraits and other illustrations. He almost threw them out, but he soon learned they had been left by Wallace A. Rayfield, a black man and architect in the early 1900s who died in obscurity. As Dorough discovered, the plates were some of the few documents left of Rayfield’s work. Dorough talks to host Dick Gordon about Rayfield’s legacy, including the 16th Street Baptist Church of Birmingham.