The Haunting Gaze of Witness: William D. Mcpherson and M. Oliver In the tumultuous landscape of Civil War-era America, where the nation wrestled with its moral core, emerged a partnership of photographers—William D. McPherson and M. Oliver—whose work transcended mere documentation to become searing indictments of slavery’s brutality and poignant testaments to human resilience. Though biographical details remain shrouded in the mists o…