Someone returned two of Darwin's original notebooks to the Cambridge library

Someone returned two of Charles Darwin's original notebooks to the Cambridge University library twenty years after they went missing. They were left in the library inside a pink gift bag with a note saying "Librarian Happy Easter X." From the Associated Press:

The notebooks, which include the 19th-century scientist's famous 1837 "Tree of Life" sketch, went missing in 2001 after being removed for photographing, though at the time staff believed they might have been misplaced.