It was published in full only in the early 20th century, although it was featured in works of Páez's contemporaries, including Baltazar Téllez, Athanasius Kircher and by Johann Michael Vansleb.
Čeprav je James Bruce trdil, da je prvi Evropejec, ki je obiskal povirje, sodobni pisci dajejo prednost jezuitu Pedro Páezu.