File:Curtiss-Bleecker helicopter cockpit open Aero Digest July,1930.jpg
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Size of this preview: 542 × 599 pixels. Other resolutions: 217 × 240 pixels | 434 × 480 pixels | 1,007 × 1,113 pixels.
Original file (1,007 × 1,113 pixels, file size: 211 KB, MIME type: image/jpeg)