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Aviation History
1921
1921 - 0324.PDF
MAY 12, 1921 •9'-9"- o o CM s -«• o> 2 is S LAWSON L-4 AIRLINER 3 -400 HP. LIBERTY ENGINES 10 15 5CALC OF Ff£T AREA MAIN PLANES 2425 SQ.FT. AILERONS . 298 TAIL PLANES 145 ELEVATORS . . 1)6 •• . TRIMMING PLAN! 68 FIN . 30 - - RUDDtRS :•,•-•••- 43' - THE LAWSON MIDNIGHT AIRLINER, L-4 : Plan, side and front elevations to scale. 334
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