Great historic UFO photos!
Part 1:
UFO sightings: 140 years of UFO pictures - Telegraph
Part 2:
UFO sightings: 140 years of UFO pictures - Telegraph
Part 3:
http://www.telegraph.co.uk/news/picturegalleries/howaboutthat/3458222/UFO-sightings-140-years-of--UFO-picture-Part-III.html