The Nuttall Encyclopedia
The principal island in the Samoan group ( q. v .), is 140 m. in circumference, and rises in verdure-clad terraces from a belt of low land on the shore, with Apia, the capital of the group, on the N. border.
Wood, James, ed. Entry for 'Upolu'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/u/upolu.html. Frederick Warne & Co Ltd. London. 1900.