1907 (Legacy): Researcher Coll y Toste utilized early Spanish records to map the specific locations of nineteen indigenous chiefdoms across the island of Pue…

1907 (Legacy): Researcher Coll y Toste utilized early Spanish records to map the specific locations of nineteen indigenous chiefdoms across the island of Puerto Rico. His research identified regional leaders such as Urayoan in Yagüeca, Agüeybana in Guaynia, and the chieftainess Yuisa in Jaymanio. Each of these chiefs was associated with a specific territory, often defined by major river drainages like the Toa, Bayamon, and Turabo. This mapping effort has provided a foundational geographic framework for modern archaeologists studying pre-Columbian political boundaries. The distribution of these named territories illustrates the decentralized but organized nature of Puerto Rican social life at the time of contact.