First flown on 12 May 1941, the Platt-LePage XR-1 (PL-3) was the first helicopter ordered by the US Army. Laurence LePage studied the Focke-Wulf Fw 61 in Germany. Two examples of the XR-1 were built, this being the modified XR-1A. The larger PL-9 design became the McDonnell XHJD Whirlaway. Frank Piasecki worked at Platt-LePage as a young engineer. The photo comes from the files of the US Army's Watertown Arsenal, Massachusetts. Photo from: National Archives at Boston
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