Title | Author | Year | Imprint | Notes |
Obsidianites in the Malay Peninsula | Scrivenor, J. B. | 1931 | Manila : | |
The Occupations of Kaoayan People | Corsino, Felicisimo E. | 1916 | Manila | |
Official Statement as to the Surrender of Datu Alamada and the Distinguished Services of Rosauro Lualhati | Carpenter, Frank W. | 1920 | Manila | |
Official Views on Spanish Policy in Sulu and Mindanao | | 1980 | Manila | |
Old beliefs and customs from Ligao, Albay provinces | Payno, Gerardo | 1927 | Manila | |
Old Beliefs in Vigan | Tongson, Josefina | 1916 | Manila | |
The Old Furniture of the Philippines | Leas, Helen A. | 1923 | Manila : | |
Old Marriage Customs Among the Bisayas | Sevilla, Jorge H. | 1926 | Manila | |
Old stories and Legends from Masingal, Ilocos Sur | Arrieta, Luisa | 1924 | Manila | |
Old Tagalog Marriage Customs | Buendia, Hipolito | 1917 | Manila : | |
Old Tagalog Songs | Del Estrella, Jose | 1921 | Manila : | |
Old Tagalog Songs, Riddles, and Stories from the Province of Bataan | Mateos, Juan L. | 1921 | Manila : | |
Omens of the Primitive Ilokos | Millan, Juan | 1915 | Manila | |
On a Quinary Notation among the Ilongots of Northern Luzon | Beyer, H. Otley | 1919 | Manila | |
On the Particles of Relation of the Isinai Language | Beyer, H. Otley | 1913 | Manila | |
Opinion Relating to the Status of the Sultan of Sulu | Leyeu, Fonciano | 1918 | Zamboanga | |
Oriental, Latin, and Anglo-SAxon Elements in the Mind of the Filipino | Gamboa, Meliquiades | 1917 | Manila : | |
Origen Del Nombre Marveles | De Guzman, Gregorio | 1920 | Manila : | |
Origin and Development of the Pampangan Drama | Barrere, Consuelo | 1916 | Manila | |
The Origin and Development of the Town of Sigma | No such file or Directory | | | |
The Origin and Development of the Visayan Homes | Amaguin, Pefro J. | 1926 | Manila | |
The Origin and Foundation of Magdalena | Purisima, Consolacion | 1925 | Manila : | |
Origin Census Schedules of the Non-Christian of Bulakan Province: Census 1903 | No Author | 1903 | Province of Bulakan | |
Origin Draft of the Memorandum Agreement of March 22, 1915 | Not clear | | | |
Origin Myths Among the Mountain Peoples of the Philippines | Beyer, H. Otley. and Barron, Roy Franklin | 1912 | Manila | |
The Origin of Banahaw Mountain | Macasset, Paulo G. | 1915 | Manila : | |
Origin of Gubat, Sorsogon | Camara, Elvira E. | 1925 | Manila | |
The Origin of Lake Lanao | Valdez, Cesario | 1922 | Manila | |
The Origin of mountains | Irving, Clement | 1917 | Manila | |
The Origin of Pinatubo Volcano | Rodriguez, Jose N. | 1915 | Manila | |
The Origin Of Tektites | Beyer, Henry O. | 1941 | Manila : | |
Origin Of Tektites | Spencer, L. J. | 1933 | London : | |
The Origin of the Filipinos | Ynares, Bonifacio | 1915 | Manila : | |
The Origin of the Magasawang Dagat | Reyes, Vivencio P. | 1915 | Manila : | |
The Origin of the Monkey | Gerardo, Anastacio B. | 1915 | Manila | |
The Origin of the Polo Islands | Lopez, Antonia A. | 1915 | Manila : | |
Original Census Schedules from the Island of Basilan | | 1903 | Island of Basilan | |
Original Census Schedules from the Non-Christian Tribes of Mindoro | | 1903 | | |
Original Census Schedules from the Non-Christians Peoples of the Island of Panay | | 1903 | | |
Original Census Schedules or Non-Christian Peoples of the Province of Ambos Camarines (census of 1903) | Beyer, H. Otley | 1918 | Manila | |
Original Census Schedules, Census of the Non-Christian Tribes of the Province of Lepanto-Bontok | The Enumerators | 1903 | Lepanto-Bontok | |
Original Census Schedules, Census of the Non-Christian Tribes of the Province of Nueva Ecija | The Enumerators | 1903 | Nueva Ecija | |
Original Census Schedules: Census of the Non-Christian Tribes of the Province of Isabela | The Enumerators | 1903 | Isabela | |
Original Census Schedules: Census of the Non-Christian Tribes of the Province of Nueva Vizcaya | The Enumerators | 1903 | Nueva Viscaya | |
Original Customary Law and Mohammedan Law Chapters Prepared for his First Vol. Entitled Government of the Philippine Islands. | Malcolm, George A. | 1915 | Manila : | |
Original Customary Law and Mohammedan Law Chapters Prepared for His First Vol. Entitles Government of the Philipiine Islands | Malcoln, George | 1915 | Manila : | |
Original Manuscripts | Beyer, Otley H. | 1905-1922 | Manila | |
An Original Sulu Poem by Hadji Usman (1924) | | 1924 | Jolo, Island of Sulu | |
Outlined Readings in Philippine Social Conditions | Macaraig, Serafin E. | 1924 | Manila : | |