Incoming Resources
- The origin of civilization, The Teaching Company, Part 1, Disc 1-2
- The origin of civilization, Scott MacEachern, Part 1
- The origin of civilization, Scott MacEachern, Part 4
- The origin of civilization, Scott MacEachern, Part 3
- The origin of civilization, The Teaching Company, Part 2, Disc 3-4
- The origin of civilization, The Teaching Company, Part 3, Disc 5-6
- The lost civilizations of the Stone Age, Richard Rudgley
- The origin of civilization, The Teaching Company, Part 4, Disc 7-8
- The origin of civilization, Scott MacEachern, Part 2