**It is possible that Frodo's arrival in Valinor is an accurate recording of factual events in-universe**

While, as far as we understand, there are no more immigrants *from* Valinor (only those heading *to* Valinor), who could bear tale of Frodo's arrival, there is at least one way for this to be an accurate factual account in Middle Earth.

Aragorn, who at the start of the Fourth Age possesses a palantír, both loved Frodo, Bilbo, Gandalf, Elrond, and Galadriel, *and* had values, capacity, and right to see visions of the undying lands, may have watched from afar as the ship from the Havens passed into the West. (In *Unfinished Tales* a note describes one of the stones as being specifically 'oriented' so that it always gazed to "Eressëa in the vanished West.") So the end of Frodo's journey may thus actually have been recorded as an in-universe fact which was subsequently passed along to the remaining hobbit members of the Fellowship.