Kaart van de rede van Symeay op Magindanao

1800

Plan de la baie de Bongo.; Plan de la baie de Manille.

1846

Mallat, Jean

Western Masbate Island

1951

Philippine Coast and Geodetic Survey

1:100k

Western Mindanao

1912

1:411k

Western Mindanao

1908

1:411k

Western Mindanao

1905

1:411k

Carta General Del Archipielago Filipino

1897

1:734k

No. 27. Mindanao Oriental.

1899

U.S. Coast and Geodetic Survey

1:2m

South Mindanao / Topografische Dienst

1941

Topografische Dienst Batavia

Geologic reconnaissance map of Mindanoa / Bureau of Science, Division of Mines ; P. Moskaira, engraved ; geology by Warren D. Smith

1915

Bureau of Science . Division of Mines