The earliest record of the location appears as Sao Joao on a Portuguese map by Pedro Reinel in 1519. When John Rut visited St. John's in 1527 he found Norman, Breton and Portuguese ships in the harbour. On 3 August 1527, Rut wrote a letter to King Henry on the findings of his voyage to North America; this was the first known letter sent from North America. St. Jehan is shown on Nicholas Desliens' world map of 1541 and San Joham is found in Joao Freire's Atlas of 1546. It was during this time that Water Street was first developed, making it the oldest street in North America.[dubious discuss]
What year did John Rut visit St. John's? (If the question is unanswerable, say "unanswerable")
1527