The de Young museum in San Francisco is currently exhibiting 'South of Market', a group of photographs taken by artist Janet Delaney in the mid-1980s of the South of Market neighborhood. During the period the photographs were taken, San Francisco was experiencing a wave of re-development and "gentrification" in this area of the city that permanently altered the neighborhood. It was at this time that the Moscone Center complex was first built (it would later be expanded several times) and also...