» Gossamer Albatross Photo Collection Gallery archive of the NASA Dryden Flight Research Center. http://www.dfrc.nasa.gov/gallery/photo/Albatross/
» Human Powered Aircraft Group of the Royal Aeronautical Society Includes a comprehensive overview of human powered flight, along with information The Kremer prizes, references, and links to related resources. http://ourworld.compuserve.com/homepages/j_d_mcintyre/hpag.htm
» Human Powered Ornithopter Human flight through flapping. Features overview of projects including Karura, photo galleries, and contacts. http://web.kyoto-inet.or.jp/people/kazuho/index-e.htm
» Raven Project Includes details, history and FAQ regarding this human powered aircraft (HPA) that has a wing span of 115 ft, a length of 30 ft, a height of 11 ft, and a weight of 90 lb. http://ravenproject.org/
» Velair Features information, specifications, photos and history of the first aircraft to fly from Munich airport (MUC) runway in the summer of 1990. http://www.skytec-engineering.de/hpa.htm