I always thought Pharaoh's dream falls into this category. The Egyptians never recorded seven years of feast followed by seven years of famine. Of course, if the whole thing were written down many centuries after the fact, no one would have to bother with such piddly little details.
...and so a tradition was born....
The Torah is a bit different from the later books in that they WERE all written after the fact. This is of course undisputed. Not so for others, for example the major prophets such as Ezekiel, Daniel and Isaiah.