Durham, N.C. was once known nationally for its "Black Wall Street," a cluster of flourishing black-owned financial institutions and businesses. In the 1960s that energy dissipated in the wake of urban development, but still the city held on to a large number of black owned businesses. Now, propelled by a national fellowship program, the city of Durham is building a plan and a set of tools to help preserve black-owned businesses in the face of an aging baby boomer generation, a new knowledge economy, and 21st-century business model shifts that traditional entrepreneurs may ignore.