- 21:36, 8 April 2008 diff hist -7,835 AY Honor Hot Air Balloons Answer Key →Public demonstrations
- 21:34, 8 April 2008 diff hist -8,768 AY Honor Hot Air Balloons Answer Key →Initial experiments
- 21:24, 8 April 2008 diff hist -8,831 AY Honor Hot Air Balloons Answer Key →Human flight
- 21:22, 8 April 2008 diff hist -7,054 AY Honor Hot Air Balloons Answer Key →References
- 21:19, 8 April 2008 diff hist -7,500 AY Honor Hot Air Balloons Answer Key →Revival of the hot air balloon
- 21:11, 8 April 2008 diff hist -7,518 AY Honor Hot Air Balloons Answer Key →Revival of the hot air balloon
- 21:09, 8 April 2008 diff hist -7,328 AY Honor Hot Air Balloons Answer Key →Human flight
- 21:08, 8 April 2008 diff hist -7,300 AY Honor Hot Air Balloons Answer Key →Human flight