Air Training Department, The Artillery School, U.S. Army, "The New Grasshopper—L-16互联网档案馆的存檔,存档日期2018-09-21.," (semi-official U.S. Army tutorial written to guide pilots transitioning from the Piper L-4 to the Aeronca L-16) The Field Artillery Journal, Nov-Dec 1947, United States Army
Air Training Department, The Artillery School, U.S. Army, "The New Grasshopper—L-16互联网档案馆的存檔,存档日期2018-09-21.," (semi-official U.S. Army tutorial written to guide pilots transitioning from the Piper L-4 to the Aeronca L-16) The Field Artillery Journal, Nov-Dec 1947, United States Army