The History Cat
The History Cat: Lincoln's High Tech War
Describes the weaponry used during the Civil War, and some of the innovative technology that the Union's military forces employed. These included the minie ball, rifles, underwater torpedoes, the use of hot air balloons, and improved...
Digital Public Library of America
Dpla: Early Aviation
Collection of digital resources gathered from public libraries, archives, and museums about early aviation. Learn more about key innovators and technologies from early flight experimentation and the invention of the hot air balloon to...
PBS
Pbs Learning Media: Pilotless Flight: Timeline of Unmanned Aerial Vehicles
Explore this NOVA: "Spies That Fly" interactive timeline and discover the many technological innovations in the history of unmanned flight, from hot-air balloons to miniature flying robots.