[Jefferson once told this story to a friend:]
“I was coming down the elevator of the Stock Exchange building, and at one of the intermediate floors a man whose face I knew as well as I know yours got in. He greeted me very warmly at once, said it was a number of years since we had met, and was very gracious and friendly, but I couldn’t place him for the life of me. I asked him as a sort of feeler how he happened to be in New York, and he answered, with a touch of surprise, that he had lived there for several years. Finally, I told him in an apologetic way that I couldn’t recall his name. He looked at me for a moment and then he said very quietly that his name was U.S. Grant.
“ ‘What did you do, Joe?’ his friend asked.
“ ‘Do?’ he replied, with a charactertistic smile. ‘Why, I got out at the next floor for fear I’d ask him if he had ever been in the war.’ ”