I recently saw a documentary called History Channel presents: Ancient Aliens (2009) and one of interviewees was Erich Von Daniken, author of the book Chariots of the Gods (1968). The book introduced the concept that the earth may have been visited in the past by ancient astronauts, and this was one of the major themes in Jack's Eternals series. Here is a sequence from Eternals #1 (1976) where Jack has his main character Orion giving some human characters a lesson in extraterrestrial history (pgs. 10 - 12). If you have a hard time reading the captions, just left-click on the image and it will enlarge. Jack packs a wide variety of images and ideas into only 7 panels. Inks by John Verpoorten.