Although there is no explanation of how the angel acquired those letters, the overlying story is tha

Most everyone at least acknowledges it as a popular concept in fictional literature, while there is some debate as to how possible such an exercise orlando vacation condo rentals may be. The idea of traveling through time is one which is natural to our modern sensibilities.
But there are no recorded mentions of even a vague idea of backward time travel found in any written form until at least the 1700's, we have a few ancient stories that have a rough inclination towards traveling forward in time. However the idea of time travel as a plot possibility is one which is not found much in human culture throughout the ages.
Upon returning home he finds that several hundred years have passed. This story dates back to around 700 BCE - 300 CE and involves King Revaita orlando vacation condo rentals traveling to heaven to meet Brahma. One of the earliest mentions we have of time travel at all comes from an ancient Hindu text called the Mahabharatha.
This is quite similar to Washington Irving's story Rip Van Winkle. And his house has collapsed and his family has all passed and everything he owned in life is gone, when he returns home he finds that 300 years have actually passed. Which describes the adventure of a fisherman who travels to an undersea palace for three days, in 720 CE we see the tale of Urashima Taro described in the Nihongi.
While the story was fictional the author actually intended the book to be a guideline for people to follow to create a utopian society. And when he awakes he is in a Paris of the future, he then falls asleep. This extremely popular book depicts the tale of a man who has a fight with a philosopher friend of his about the problems with Parisian society. A Dream If Ever There Were One", a more modern version of the time travel story comes from Louis-Sebastien Mercien's book "The Year 2440.
Although there is no explanation of how the angel acquired those letters, the overlying story is that the narrator of the book was given the letters by a guardian angel in 1733. And 1998, this is comprised orlando vacation condo rentals mostly of a series of letters sent by British Ambassadors regarding the state of the nation in 1997. The first story that even toys with the notion of backwards time travel is "Memoirs of the Twentieth Century" by Samuel Madden.
And has been the guideline for all time travel novels that have come since, is really the novel that popularized time travel as a literary concept, the Time Machine, the latter book. By HG Wells, and the Time Machine, by Charles Dickens, later time travel novels include A Christmas Carol.