Back at his job today, William Andrew Johnson was singing happily. He saw one of "his folks" Friday. Eighty-year-old William Andrew was a servant of the 17th President of the United States, Andrew Johnson. When President Roosevelt came down from the White House to greet Knoxville, he was on the first row, smiling and cheering. "I didn't get to shake hands with him like I wanted to, but, I got to see him good," he said. "I feel like he's one of my kin folks because I used to stay in the White...