It’s been six years since Dr. Ulrich “George” Klopfer performed his last known abortion. The vacant clinic building at 2210 Inwood Drive has cobweb-veiled windows and gas station coffee cups lined neatly along the window sill, suggesting the property has been neglected for years. But residents who live and work nearby each have their own stories about the frail, gray-haired abortion doctor who, for years after the office closed, visited the building every week.