NARA RG 72 (Records of the Bureau of Aeronautics) General Correspondence Initiated in the Office of the Chief of Naval Operations, File OZ1 to OZ4 Vol. 2, Roll 4, NNM 68 508 (11318)
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Collection Citation:
50th Anniversary of the NC-4 Transatlantic Flight Collection [Smith], Acc. XXXX-0418, National Air and Space Museum, Smithsonian Institution.