Modern historians have matched Iroquois oral history with astronomy.
Iroquois history records a solar eclipse over what is now central New York, when the first Grand Council of the Confederacy met to set up a league, rather like the United Nations.
Along with other corroborating evidence, this places the founding council in 1142. 
It's a potent mix when stories meet hard physical realities, like the movement of the stars.
Or a glimpse of a girl on film.
Here's the only existing film of Anne Frank, from July 22, 1941.
This is from the the Anne Frank House youTube channel, who writes:
"The girl next door is getting married. Anne Frank is leaning out of the window of her house in Amsterdam to get a good look at the bride and groom. It is the only time Anne Frank has ever been captured on film. At the time of her wedding, the bride lived on the second floor at Merwedeplein 39. The Frank family lived at number 37, also on the second floor. The Anne Frank House can offer you this film footage thanks to the cooperation of the couple."
 From Iroquois Culture and Commentary, by Doug George-Kanenetiio, 2000, p. 27-28.