ATLANTA, Jan. 13 - Over the years, the city that the Rev. Dr. Martin Luther King Jr. called home has grown accustomed to stagnation and disrepair at the institution established in his name in 1968, even as it has paid her sons six-figure salaries. Last month, the center's board, controlled by Dr. King's younger son, Dexter Scott King, announced it was considering the sale of the King Center complex, appraised at $11 million, to the National Park Service. That proposal and myriad other difficulties - including a federal investigation into the center's use of taxpayer money and an estimate by...