This 1949 photo taken by British mystery author Agatha Christie shows a statue of a lamassu, a winged bull from Assyrian mythology who guarded the royal court from evil, at the ancient site of Nimrud, near modern day Mosul, Iraq. Christie had a little-known link to Nimrud: She accompanied her husband, archaeologist Max Mallowan, as he excavated the onetime capital of the Assyrian Empire, and she assisted by piecing together some artifacts and chronicling the dig in photos and film.