- Gossamer Albatross Photo Collection - Gallery archive of the NASA Dryden Flight Research Center.
- Human Powered Ornithopter - Human flight through flapping. Features overview of projects including Karura, photo galleries, and contacts.
- 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.
- Velair - Features information, specifications, photos and history of the first aircraft to fly from Munich airport (MUC) runway in the summer of 1990.
