Note 3 — Chapter XI · The Search Continued
Reading edition
Since the historical Uilcapampa is not geographically identical with the modern Vilcabamba, the name applied to this river and the old Spanish town at its source, I shall distinguish between the two by using the correct, official spelling for the river and town, viz., Vilcabamba; and the phonetic spelling, Uilcapampa, for the place referred to in the contemporary histories of the Inca Manco.