Overview: Civil War-Era Submarine The Place: New Orleans, Louisiana In Louisiana's bustling French Quarter sits a surprising remnant of American warfare - a Civil War-era submarine. Salvaged from the depths of a New Orleans lake, the origin of this vessel remains a murky mystery. Now a New Orleans man wants to know if his great-grandfather helped build the iron-clad wonder. Red Cloud's Peace Pipe? The Place: Livermore, California Was this peace pipe given to a Californian woman's ancestor by the famous warrior Chief Red Cloud? The ancestor was the Indian agent who moved the Oglala Lakota to a Reservation in South Dakota. Would Chief Red Cloud have given such a gift to a U.S. government official? The History Detectives go back to the turbulent days of the 1870s and a battle of wills and political scandal that reached the highest levels of government. Thomas Edison's House? The Place: Union, New Jersey This strange house is said to have been designed and built by Thomas Edison. Did the