1223 Vickers Ave., 1950s (Courtesy Dave Piatt) 1223 Vickers Ave., 1950s (Courtesy Dave Piatt) 1223 Vickers Ave., 1950s (Courtesy Dave Piatt) Per Triangle Modernist Houses: Designed by Marion A. Ham. In association with primary architect Welton Becket, Ham designed the 1965 North Carolina Mutual Insurance Company in Durham, the city’s most...