1887-1888
On the lower Agúsan the missionaries, notably Urios, continued their labors and succeeded in gaining over to Christianity many of the Banuáon people of the upper hut and Libang Rivers. The year 1887-88 seems to have been one of comparative peace except in the district to the west of La Paz, on the Argáwan River, where it became necessary to make use of armed troops.
1889
In 1889 cholera got into the Agúsan Valley. The inhabitants of Tortosa abandoned their town. On the Pacific coast Puntas penetrated among the Manóbos of the Tágo River above the town of Alba, and Alaix visited the Mamánuas of Kantílan and Lanusa, among whom he made 84 converts. In the same year Peruga made more Mandáya converts in Alba on the Tágo River.
1890
In 1890 Moncayo and Gandia had a feud, as a result of which the people of the former abandoned their town. Matters progressed so favorably on the Argáwan that Sagunto was pacified and Asuncion was founded farther up on the same river. This town is no longer in existence, but a small rancheria called Tilyérpan was founded in 1906 nearer to Sagunto. Bása on the Kasilaían River and San Isidro on the Bahaían River were founded the same year, but, on the other hand, an outbreak of fever led to the abandonment of Gracia and Concepcion on the Ihawán. Many Mamánua and Mandáya converts were added to Los Arcos. The conversion of these is attributed to the fighting that had previously taken place in Las Navas and Borbon, on the same river. Milagros on the Óhut was founded this same year.
1891
The year 1891 does not show any further special development except the foundation of a Banuáon settlement, called Concordia, on the Líbang River.
In 1892 Vigo and Borja (pronounced Borha) on the Baóbo River were established. Manóbos of the Sibágat River were converted and a settlement was founded at its juncture with the Wá-wa. This settlement is now called Pait. San Miguel on the Tágo River was founded with 25 families, most of whom were Manóbos. This town is no longer in existence. Amparo, on the other hand, was abandoned, and my authority for this statement remarks that this was the seventh time since its foundation that the town had been abandoned. Other towns had passed through the same experience, though not so many times.