By January 1961, 12 manufacturers, including Cessna, Hughes Tool Co. Aircraft Division, Hiller Aircraft and Bell Helicopters, had responded with 19 designs.
helicopter | Guiding Light | Electric Light Orchestra | light rail | Edmonton Light Rail Transit | light curve | Light-emitting diode | light novel | Charge of the Light Brigade | Bell Helicopter | Helicopter | William Light | light | incandescent light bulb | Light | Florida Power & Light | Budgie the Little Helicopter | Baltimore Light Rail | traffic light | Light Up the Sky | Helicopter rotor | Figures of Light | Durham Light Infantry | Docklands Light Railway | Divine Light Mission | Black Light Burns | Australian Light Horse | Angels of Light | Visionaries: Knights of the Magical Light | Somerset Light Infantry |