1864 Surigao Port survey of Capt. Claudio Montero - Spanish Navy.
* Pueblo de Surigao
* Fuerte (Fort) de Surigao
* Punta de Bilanbilan
Port Surigao - port on north coast of northwest Mindanao and 12 m. southwest of Dinagat island and 6 m. southeast of Bilaa point, Mindanao.
Source: "A pronouncing gazetteer and geographical dictionary of the Philippine Islands, United States of America with maps, charts and illustrations," by United States. Bureau of Insular Affairs; United States, 1902.