Who was the 27th President of the United States? Who was the President when the 24th Amendment was ratified? What was the Volstead Act and Who was the President when it was signed? Who was the President when the United States Supreme Court decided Plessy v. Ferguson? If you are an American history buff, like me, then this is the app you want to download. In fact, calling this app American Presidents is a dreadful misnomer, as it contains so much more than that. This app would be better called A Treasure Trove of Trivia About American History and Presidents…or something like that.