Profile Report on Baguio City. s.l. : s.n., 1968.

Reed, Robert R. City of Pines: The Origins of Baguio as a Colonial Hill Station and Regional Capital. Second Edition. Baguio City : A-Seven Publishing, 1999.

Ilocos Norte : Gem of the Northern Plains. Batac, Ilocos Norte : Iloko Research and Information Center, 1988.

Ilocos. s.l. : Philippine Tourism Authority, 198?

Ladaoan : The Ilokos and the Ilokanos. Manila : Executive Committee, 1977.

The Abra Journal of History. Quezon City : Abra Historical Associations, Inc., 1974.

Schmitz, Josef. The Abra Mission in Northern Luzon, Philippines. (Series D: Occasional Monographs, Number Two). Translated by John Vogelgesang. Cebu City : Cebu City, 1971.

Japanese Pioneers in the Northern Philippine Highlands: A Centennial Tribute 1903-2003. Afable, Patricia Okubo., ed. Baguio City : Filipino-Japanese Foundation of Northern Luzon, Inc., 2004.

Brief Notes About Ilocos and Abra. s.l. : s.n., 1968.

Manalo, Ino., ed. Conscripcion: Imagining and Inscribing the Ilocano World (An Exhibition, Metropolitan Museum of Manila, October 17, 2011 to February 17, 2012). Manila : National Archives of the Philippines in partnership with The Provincial Government of Ilocos Sur, 2014.