Harry S. Truman's middle name has only one letter "s". This practice is also very common in southern States and Missouri, where locals love to use English letters instead of names. Truman said that his middle letter was set up to commemorate his grandfather Anderson Shipp(e) Truman and his grandfather Solomon Young, so the letter "S" stands for both "Shipp(e)" and "Solomon". He once said that "S" itself is a name, not a letter, so there is no need to add a little. However, it should be noted that according to English grammar, only abbreviated words need to be added with one point. But in fact, whether it is the official documents of American government departments or Truman's presidential library, a little is added after the word "S". On the other hand, Truman's library also keeps a lot of his own autographs, and most of these signatures are accompanied by a little after the word "S". Whether Truman should add a point after the letter "S" has also caused extensive debate. However, it is generally believed that although "s" is a name, it still needs to be added at the back.