The date is agreed in every account, including the church's own. The place is not. The church describes the founding as taking place in the Amazon forest without naming a settlement, and several accounts place it at a rubber camp near the Bolivian frontier, while widely circulated reference summaries give the town of Porto Velho instead.
What would resolve this The church's own founding records and the recollections of the first members, read against Brazilian civil registration and land records for the rubber camps of the upper Madeira in 1961.
OpenBrazilian religious history and archival researchBeatriz Caiuby Labate and Edward MacRae (eds.), Ayahuasca, Ritual and Religion in Brazil