Cuba returned historical documents stolen from its National Archives, including the 1897 Constitution of La Yaya, after a rigorous authentication and return process managed from the United States. Cuban historical documents were authenticated and returned to their country of origin after an investigation. Photo: National ArchivesCuba recovered historical documents stolen from the National Archives and returned from the United States. Plaque with the names of the representatives to the Constituent Assembly of La Yaya, in the former Museum of the Captains General of Havana, now the Museum of the City. (Photo: EcuRed)The Constitution of Yaya was the fourth of the Mambí Constitutions, preceded by Guáimaro, Baraguá, and Jimaguayú.