A few days ago ENAC UAV Lab uploaded their Paparazzi UAV video collection from 2004-2010. If you are interested in some Open-Source UAV history you should take a look at them.
It is exciting to see how many things Paparazzi UAV could already do 5 to 10 years ago, as well as how far things have improved and evolved since then.
One of the highlights is a multi UAV flight at IMAV2006. This is 9 years ago. It is great to see how relaxed the safety pilots are. 🙂
Another highlight is the Paparazzi UAV Ground Control Station (GCS). It definitely has many of the elements of how the GCS looks today but it definitely changed and improved over the years.