Earlier aerial cameras, from the World War I era, included the Kodak K1, with focal plane shutter, the Fairchild K3, K3A, K3B etc., with in-lens shutter to eliminate distortion, K5 etc., some of which used individual glass plates, some individual sheet film, and some roll film. Similar cameras, from the World War II era: K17, K18, K19, K21, K22, F20, F40, F56, etc., many making 9" x 9" or 9" x 18" images using 9"+ roll film. Aerial photo histories: