– The son of Athena who designed the Statue of Liberty. In The Demigod Files story titled The Stolen Chariot, Percy Jackson mentions Frédéric Bartholdi to Clarisse La Rue. According to what Annabeth Chase had told Percy, Bartholdi designed the Statue of Liberty as a representation of his mother Athena. George Washington – A son of Athena and the 1st President of the United States. In The Lightning Thief, George Washington is mentioned in the book as one of the few famous and successful demigods who survived outside of Camp Half-Blood and is depicted in one of the works displays during the Camp Half-Blood fireworks. Harriet Tubman – A daughter of Hermes and an abolitionist spy. In The Battle of the Labyrinth, Chiron states that Harriet once used many clear-sighted mortals on the Underground Railroad hinting that the Underground Railroad may have utilized the Labyrinth to help transport escaped slaves. Harry Houdini – The son of an unknown god who is a famous magician and escape artist, perhaps implying that his father was Hermes. It is mentioned in The Lightning Thief that he, Orpheus, and Hercules have each been able to escape from the Underworld. A Nereid said that Houdini "could escape even the depths of Tartarus". Jack London – The son of Mercury and author of The Call of the Wild. He was mentioned in The Lost Hero as the architect of the Wolf House where Lupa judges the newly arrived demigods to see if they are worthy of being trained at Camp Jupiter. Joshua Lawrence Chamberlain – The son of an unknown god and a soldier in the American Civil War. In The Sea of Monsters, Chamberlain is mentioned by Chiron when talking to Percy Jackson after having rescued him and his friends from the Princess Andromeda. Louis XIV – The son of Apollo and a king of France. In The Hidden Oracle, Louis is mentioned by Apollo when talking about his children. Thomas Jefferson – The 3rd President of the United States and the writer of the Declaration of Independence. In The Battle of the Labyrinth, Thomas Jefferson is mentioned to be among the rotating members of the Judgement Pavilion where he is assigned to judge where Daedalus will be sent to after his death. William H. Seward – The son of Hebe and a former Governor of New York. During the Battle of Manhattan in The