Whenabouts of Burr: A Science Fiction Novel

Someone has taken the original document of the U.S. Constitution and substituted another. The substitute is identical, just as old, and equally authentic -- except it has been signed by Aaron Burr! It contradicts history, but it is real and there for everyone to see!

Such a crime calls for out-of-this-world detective work. There must be alternate Americas -- and one of them must be an American unio...