Carta dirigida al Mariscal Cerna, presidente De La República de Guatemala, por El Doctor Don Mariano Ospina ex-presidente de la Nueva Granada, 1868, Box: 13, Folder: 20. Manuscripts relating to Guatemala and Central America, MS 187. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/548766 Accessed May 12, 2024.