Examples from the Web for ucayali
The officers of the "Morona" assured us that the same formation was traceable far up the Ucayali and Huallaga.
A second will continue that line eastward to the Ucayali River.South America Observations and Impressions|James Bryce
Furthermore, the Indians have been enslaved by the rubber men from the Ucayali.The Andes of Southern Peru|Isaiah Bowman
On the Ucayali are numerous vagabond tribes, living for the most part in their canoes and temporary huts.
Of all the savage tribes that roam about the head waters of the Ucayali, the Cashibos alone are cannibals.Life of Rear Admiral John Randolph Tucker|James Henry Rochelle