Man attempts to break world record flying the world solo in hot-air balloon - YouTube
Balloon flight Stockholm | Stockholm County
Armenia sets a world record – performing the longest balloon flight | ARMENPRESS Armenian News Agency
National Geographic February 1977 Longest Balloon Flight Audubon Live In Harlem | eBay
NatGeoMaps auf Twitter: „Map of the Day: This Feb. 1977 infographic shows major accomplishments in ballooning history. The schematic diagram depicts the route of the longest manned balloon flight at the time.