"The Treasure of Hidden Valley" is a 1915 novel by Willis G. Emerson. Willis George Emerson (1856 - 1918) was an American lawyer, novelist, politician, and founder of the North American Copper Company and the town of Encampment in Wyoming. His most famous novel is "The Smoky God, or A Voyage Journey to the Inner Earth", presented as a real account penned by the author in 1908 concerning the escapades of a Norwegian sailor named Olaf Jansen who sailed through a hole to the Earth's interior at the North Pole. Other notable works by this author include: "Winning Winds" (1885), "Grey Rocks: A tale of the Middle West" (1894), and "Was It a Crime? 'Coin at School' dissected" (1900). Many vintage books such as this are increasingly scarce and expensive. It is with this in mind that we are republishing this volume now in an affordable, modern, high-quality edition complete with the original text and artwork.